Fix benches

Diff Indexing for the vector points

.github/ISSUE_TEMPLATE/sprint_issue.md

@@ -7,19 +7,17 @@ assignees: ''
 
 ---
 
-Related product team resources: [roadmap card]() (_internal only_) and [PRD]() (_internal only_)
+Related product team resources: [PRD]() (_internal only_)
 Related product discussion:
 Related spec: WIP
 
 ## Motivation
 
-<!---Copy/paste the information in the roadmap resources or briefly detail the product motivation. Ask product team if any hesitation.-->
+<!---Copy/paste the information in PRD or briefly detail the product motivation. Ask product team if any hesitation.-->
 
 ## Usage
 
-<!---Write a quick description of the usage if the usage has already been defined-->
-
-Refer to the final spec to know the details and the final decisions about the usage.
+<!---Link to the public part of the PRD, or to the related product discussion for experimental features-->
 
 ## TODO
 

.github/workflows/benchmarks-manual.yml

@@ -74,4 +74,4 @@ jobs:
           echo "${{ steps.file.outputs.basename }}.json has just been pushed."
           echo 'How to compare this benchmark with another one?'
           echo '  - Check the available files with: ./benchmarks/scripts/list.sh'
-          echo "  - Run the following command: ./benchmaks/scipts/compare.sh <file-to-compare-with> ${{ steps.file.outputs.basename }}.json"
+          echo "  - Run the following command: ./benchmaks/scripts/compare.sh <file-to-compare-with> ${{ steps.file.outputs.basename }}.json"

.github/workflows/benchmarks-pr.yml

@@ -0,0 +1,97 @@
+name: Benchmarks (PR)
+on: issue_comment
+permissions:
+  issues: write
+
+env:
+  GH_TOKEN: ${{ secrets.MEILI_BOT_GH_PAT }}
+
+jobs:
+  run-benchmarks-on-comment:
+    if: startsWith(github.event.comment.body, '/benchmark')
+    name: Run and upload benchmarks
+    runs-on: benchmarks
+    timeout-minutes: 4320 # 72h
+    steps:
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - name: Check for Command
+        id: command
+        uses: xt0rted/slash-command-action@v2
+        with:
+          command: benchmark
+          reaction-type: "eyes"
+          repo-token: ${{ env.GH_TOKEN }}
+
+      - uses: xt0rted/pull-request-comment-branch@v2
+        id: comment-branch
+        with:
+          repo_token: ${{ env.GH_TOKEN }}
+
+      - uses: actions/checkout@v3
+        if: success()
+        with:
+          fetch-depth: 0 # fetch full history to be able to get main commit sha
+          ref: ${{ steps.comment-branch.outputs.head_ref }}
+
+      # Set variables
+      - name: Set current branch name
+        shell: bash
+        run: echo "name=$(git rev-parse --abbrev-ref HEAD)" >> $GITHUB_OUTPUT
+        id: current_branch
+      - name: Set normalized current branch name # Replace `/` by `_` in branch name to avoid issues when pushing to S3
+        shell: bash
+        run: echo "name=$(git rev-parse --abbrev-ref HEAD | tr '/' '_')" >> $GITHUB_OUTPUT
+        id: normalized_current_branch
+      - name: Set shorter commit SHA
+        shell: bash
+        run: echo "short=$(echo $GITHUB_SHA | cut -c1-8)" >> $GITHUB_OUTPUT
+        id: commit_sha
+      - name: Set file basename with format "dataset_branch_commitSHA"
+        shell: bash
+        run: echo "basename=$(echo ${{ steps.command.outputs.command-arguments }}_${{ steps.normalized_current_branch.outputs.name }}_${{ steps.commit_sha.outputs.short }})" >> $GITHUB_OUTPUT
+        id: file
+
+      # Run benchmarks
+      - name: Run benchmarks - Dataset ${{ steps.command.outputs.command-arguments }} - Branch ${{ steps.current_branch.outputs.name }} - Commit ${{ steps.commit_sha.outputs.short }}
+        run: |
+          cd benchmarks
+          cargo bench --bench ${{ steps.command.outputs.command-arguments }} -- --save-baseline ${{ steps.file.outputs.basename }}
+
+      # Generate critcmp files
+      - name: Install critcmp
+        uses: taiki-e/install-action@v2
+        with:
+          tool: critcmp
+      - name: Export cripcmp file
+        run: |
+          critcmp --export ${{ steps.file.outputs.basename }} > ${{ steps.file.outputs.basename }}.json
+
+      # Upload benchmarks
+      - name: Upload ${{ steps.file.outputs.basename }}.json to DO Spaces # DigitalOcean Spaces = S3
+        uses: BetaHuhn/do-spaces-action@v2
+        with:
+          access_key: ${{ secrets.DO_SPACES_ACCESS_KEY }}
+          secret_key: ${{ secrets.DO_SPACES_SECRET_KEY }}
+          space_name: ${{ secrets.DO_SPACES_SPACE_NAME }}
+          space_region: ${{ secrets.DO_SPACES_SPACE_REGION }}
+          source: ${{ steps.file.outputs.basename }}.json
+          out_dir: critcmp_results
+
+      # Compute the diff of the benchmarks and send a message on the GitHub PR
+      - name: Compute and send a message in the PR
+        env:
+          GITHUB_TOKEN: ${{ secrets.MEILI_BOT_GH_PAT }}
+        run: |
+          set -x
+          export base_ref=$(git merge-base origin/main ${{ steps.comment-branch.outputs.head_ref }} | head -c8)
+          export base_filename=$(echo ${{ steps.command.outputs.command-arguments }}_main_${base_ref}.json)
+          echo 'Here are your benchmarks diff 👊' >> body.txt
+          echo '```' >> body.txt
+          ./benchmarks/scripts/compare.sh $base_filename ${{ steps.file.outputs.basename }}.json >> body.txt
+          echo '```' >> body.txt
+          gh pr comment ${{ steps.current_branch.outputs.name }} --body-file body.txt

.github/workflows/dependency-issue.yml

@@ -2,8 +2,8 @@ name: Create issue to upgrade dependencies
 
 on:
   schedule:
-    # Run the first of the month, every 3 month
-    - cron: '0 0 1 */3 *'
+    # Run the first of the month, every 6 month
+    - cron: '0 0 1 */6 *'
   workflow_dispatch:
 
 jobs:

.github/workflows/publish-apt-brew-pkg.yml

@@ -35,7 +35,7 @@ jobs:
     - name: Build deb package
       run: cargo deb -p meilisearch -o target/debian/meilisearch.deb
     - name: Upload debian pkg to release
-      uses: svenstaro/upload-release-action@2.6.1
+      uses: svenstaro/upload-release-action@2.7.0
       with:
         repo_token: ${{ secrets.MEILI_BOT_GH_PAT }}
         file: target/debian/meilisearch.deb
@@ -53,5 +53,6 @@ jobs:
         uses: mislav/bump-homebrew-formula-action@v2
         with:
           formula-name: meilisearch
+          formula-path: Formula/m/meilisearch.rb
         env:
           COMMITTER_TOKEN: ${{ secrets.HOMEBREW_COMMITTER_TOKEN }}

.github/workflows/publish-binaries.yml

@@ -54,7 +54,7 @@ jobs:
     # No need to upload binaries for dry run (cron)
     - name: Upload binaries to release
       if: github.event_name == 'release'
-      uses: svenstaro/upload-release-action@2.6.1
+      uses: svenstaro/upload-release-action@2.7.0
       with:
         repo_token: ${{ secrets.MEILI_BOT_GH_PAT }}
         file: target/release/meilisearch
@@ -87,7 +87,7 @@ jobs:
     # No need to upload binaries for dry run (cron)
     - name: Upload binaries to release
       if: github.event_name == 'release'
-      uses: svenstaro/upload-release-action@2.6.1
+      uses: svenstaro/upload-release-action@2.7.0
       with:
         repo_token: ${{ secrets.MEILI_BOT_GH_PAT }}
         file: target/release/${{ matrix.artifact_name }}
@@ -121,7 +121,7 @@ jobs:
       - name: Upload the binary to release
         # No need to upload binaries for dry run (cron)
         if: github.event_name == 'release'
-        uses: svenstaro/upload-release-action@2.6.1
+        uses: svenstaro/upload-release-action@2.7.0
         with:
           repo_token: ${{ secrets.MEILI_BOT_GH_PAT }}
           file: target/${{ matrix.target }}/release/meilisearch
@@ -183,7 +183,7 @@ jobs:
       - name: Upload the binary to release
         # No need to upload binaries for dry run (cron)
         if: github.event_name == 'release'
-        uses: svenstaro/upload-release-action@2.6.1
+        uses: svenstaro/upload-release-action@2.7.0
         with:
           repo_token: ${{ secrets.MEILI_BOT_GH_PAT }}
           file: target/${{ matrix.target }}/release/meilisearch

.github/workflows/publish-docker-images.yml

@@ -57,10 +57,10 @@ jobs:
           echo "date=$commit_date" >> $GITHUB_OUTPUT
 
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
+        uses: docker/setup-qemu-action@v3
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
 
       - name: Login to Docker Hub
         uses: docker/login-action@v2
@@ -70,7 +70,7 @@ jobs:
 
       - name: Docker meta
         id: meta
-        uses: docker/metadata-action@v4
+        uses: docker/metadata-action@v5
         with:
           images: getmeili/meilisearch
           # Prevent `latest` to be updated for each new tag pushed.
@@ -83,7 +83,7 @@ jobs:
             type=raw,value=latest,enable=${{ steps.check-tag-format.outputs.stable == 'true' && steps.check-tag-format.outputs.latest == 'true' }}
 
       - name: Build and push
-        uses: docker/build-push-action@v4
+        uses: docker/build-push-action@v5
         with:
           push: true
           platforms: linux/amd64,linux/arm64

.github/workflows/sdks-tests.yml

@@ -14,6 +14,7 @@ on:
 env:
   MEILI_MASTER_KEY: 'masterKey'
   MEILI_NO_ANALYTICS: 'true'
+  DISABLE_COVERAGE: 'true'
 
 jobs:
   define-docker-image:
@@ -30,6 +31,117 @@ jobs:
           if [[ $event == 'workflow_dispatch' ]]; then
             echo "docker-image=${{ github.event.inputs.docker_image }}" >> $GITHUB_OUTPUT
           fi
+      - name: Docker image is ${{ steps.define-image.outputs.docker-image }}
+        run: echo "Docker image is ${{ steps.define-image.outputs.docker-image }}"
+
+##########
+## SDKs ##
+##########
+
+  meilisearch-dotnet-tests:
+    needs: define-docker-image
+    name: .NET SDK tests
+    runs-on: ubuntu-latest
+    env:
+      MEILISEARCH_VERSION: ${{ needs.define-docker-image.outputs.docker-image }}
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          repository: meilisearch/meilisearch-dotnet
+      - name: Setup .NET Core
+        uses: actions/setup-dotnet@v3
+        with:
+          dotnet-version: "6.0.x"
+      - name: Install dependencies
+        run: dotnet restore
+      - name: Build
+        run: dotnet build --configuration Release --no-restore
+      - name: Meilisearch (latest version) setup with Docker
+        run: docker compose up -d
+      - name: Run tests
+        run: dotnet test --no-restore --verbosity normal
+
+  meilisearch-dart-tests:
+    needs: define-docker-image
+    name: Dart SDK tests
+    runs-on: ubuntu-latest
+    services:
+      meilisearch:
+        image: getmeili/meilisearch:${{ needs.define-docker-image.outputs.docker-image }}
+        env:
+          MEILI_MASTER_KEY: ${{ env.MEILI_MASTER_KEY }}
+          MEILI_NO_ANALYTICS: ${{ env.MEILI_NO_ANALYTICS }}
+        ports:
+          - '7700:7700'
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          repository: meilisearch/meilisearch-dart
+      - uses: dart-lang/setup-dart@v1
+        with:
+          sdk: 3.1.1
+      - name: Install dependencies
+        run: dart pub get
+      - name: Run integration tests
+        run: dart test --concurrency=4
+
+  meilisearch-go-tests:
+    needs: define-docker-image
+    name: Go SDK tests
+    runs-on: ubuntu-latest
+    services:
+      meilisearch:
+        image: getmeili/meilisearch:${{ needs.define-docker-image.outputs.docker-image }}
+        env:
+          MEILI_MASTER_KEY: ${{ env.MEILI_MASTER_KEY }}
+          MEILI_NO_ANALYTICS: ${{ env.MEILI_NO_ANALYTICS }}
+        ports:
+          - '7700:7700'
+    steps:
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version: stable
+      - uses: actions/checkout@v3
+        with:
+          repository: meilisearch/meilisearch-go
+      - name: Get dependencies
+        run: |
+          go get -v -t -d ./...
+          if [ -f Gopkg.toml ]; then
+            curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
+            dep ensure
+          fi
+      - name: Run integration tests
+        run: go test -v ./...
+
+  meilisearch-java-tests:
+    needs: define-docker-image
+    name: Java SDK tests
+    runs-on: ubuntu-latest
+    services:
+      meilisearch:
+        image: getmeili/meilisearch:${{ needs.define-docker-image.outputs.docker-image }}
+        env:
+          MEILI_MASTER_KEY: ${{ env.MEILI_MASTER_KEY }}
+          MEILI_NO_ANALYTICS: ${{ env.MEILI_NO_ANALYTICS }}
+        ports:
+          - '7700:7700'
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          repository: meilisearch/meilisearch-java
+      - name: Set up Java
+        uses: actions/setup-java@v3
+        with:
+          java-version: 8
+          distribution: 'zulu'
+          cache: gradle
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+      - name: Build and run unit and integration tests
+        run: ./gradlew build integrationTest
 
   meilisearch-js-tests:
     needs: define-docker-image
@@ -66,33 +178,6 @@ jobs:
       - name: Run Browser env
         run: yarn test:env:browser
 
-  instant-meilisearch-tests:
-    needs: define-docker-image
-    name: instant-meilisearch tests
-    runs-on: ubuntu-latest
-    services:
-      meilisearch:
-        image: getmeili/meilisearch:${{ needs.define-docker-image.outputs.docker-image }}
-        env:
-          MEILI_MASTER_KEY: ${{ env.MEILI_MASTER_KEY }}
-          MEILI_NO_ANALYTICS: ${{ env.MEILI_NO_ANALYTICS }}
-        ports:
-          - '7700:7700'
-    steps:
-      - uses: actions/checkout@v3
-        with:
-          repository: meilisearch/instant-meilisearch
-      - name: Setup node
-        uses: actions/setup-node@v3
-        with:
-          cache: yarn
-      - name: Install dependencies
-        run: yarn install
-      - name: Run tests
-        run: yarn test
-      - name: Build all the playgrounds and the packages
-        run: yarn build
-
   meilisearch-php-tests:
     needs: define-docker-image
     name: PHP SDK tests
@@ -111,8 +196,6 @@ jobs:
           repository: meilisearch/meilisearch-php
       - name: Install PHP
         uses: shivammathur/setup-php@v2
-        with:
-          coverage: none
       - name: Validate composer.json and composer.lock
         run: composer validate
       - name: Install dependencies
@@ -149,36 +232,6 @@ jobs:
       - name: Test with pytest
         run: pipenv run pytest
 
-  meilisearch-go-tests:
-    needs: define-docker-image
-    name: Go SDK tests
-    runs-on: ubuntu-latest
-    services:
-      meilisearch:
-        image: getmeili/meilisearch:${{ needs.define-docker-image.outputs.docker-image }}
-        env:
-          MEILI_MASTER_KEY: ${{ env.MEILI_MASTER_KEY }}
-          MEILI_NO_ANALYTICS: ${{ env.MEILI_NO_ANALYTICS }}
-        ports:
-          - '7700:7700'
-    steps:
-      - name: Set up Go
-        uses: actions/setup-go@v4
-        with:
-          go-version: stable
-      - uses: actions/checkout@v3
-        with:
-          repository: meilisearch/meilisearch-go
-      - name: Get dependencies
-        run: |
-          go get -v -t -d ./...
-          if [ -f Gopkg.toml ]; then
-            curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
-            dep ensure
-          fi
-      - name: Run integration tests
-        run: go test -v ./...
-
   meilisearch-ruby-tests:
     needs: define-docker-image
     name: Ruby SDK tests
@@ -224,3 +277,110 @@ jobs:
         run: cargo build --verbose
       - name: Run tests
         run: cargo test --verbose
+
+  meilisearch-swift-tests:
+    needs: define-docker-image
+    name: Swift SDK tests
+    runs-on: ubuntu-latest
+    services:
+      meilisearch:
+        image: getmeili/meilisearch:${{ needs.define-docker-image.outputs.docker-image }}
+        env:
+          MEILI_MASTER_KEY: ${{ env.MEILI_MASTER_KEY }}
+          MEILI_NO_ANALYTICS: ${{ env.MEILI_NO_ANALYTICS }}
+        ports:
+          - '7700:7700'
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          repository: meilisearch/meilisearch-swift
+      - name: Run tests
+        run: swift test
+
+########################
+## FRONT-END PLUGINS ##
+########################
+
+  meilisearch-js-plugins-tests:
+    needs: define-docker-image
+    name: meilisearch-js-plugins tests
+    runs-on: ubuntu-latest
+    services:
+      meilisearch:
+        image: getmeili/meilisearch:${{ needs.define-docker-image.outputs.docker-image }}
+        env:
+          MEILI_MASTER_KEY: ${{ env.MEILI_MASTER_KEY }}
+          MEILI_NO_ANALYTICS: ${{ env.MEILI_NO_ANALYTICS }}
+        ports:
+          - '7700:7700'
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          repository: meilisearch/meilisearch-js-plugins
+      - name: Setup node
+        uses: actions/setup-node@v3
+        with:
+          cache: yarn
+      - name: Install dependencies
+        run: yarn install
+      - name: Run tests
+        run: yarn test
+      - name: Build all the playgrounds and the packages
+        run: yarn build
+
+########################
+## BACK-END PLUGINS ###
+########################
+
+  meilisearch-rails-tests:
+    needs: define-docker-image
+    name: meilisearch-rails tests
+    runs-on: ubuntu-latest
+    services:
+      meilisearch:
+        image: getmeili/meilisearch:${{ needs.define-docker-image.outputs.docker-image }}
+        env:
+          MEILI_MASTER_KEY: ${{ env.MEILI_MASTER_KEY }}
+          MEILI_NO_ANALYTICS: ${{ env.MEILI_NO_ANALYTICS }}
+        ports:
+          - '7700:7700'
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          repository: meilisearch/meilisearch-rails
+      - name: Set up Ruby 3
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3
+          bundler-cache: true
+      - name: Run tests
+        run: bundle exec rspec
+
+  meilisearch-symfony-tests:
+    needs: define-docker-image
+    name: meilisearch-symfony tests
+    runs-on: ubuntu-latest
+    services:
+      meilisearch:
+        image: getmeili/meilisearch:${{ needs.define-docker-image.outputs.docker-image }}
+        env:
+          MEILI_MASTER_KEY: ${{ env.MEILI_MASTER_KEY }}
+          MEILI_NO_ANALYTICS: ${{ env.MEILI_NO_ANALYTICS }}
+        ports:
+          - '7700:7700'
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          repository: meilisearch/meilisearch-symfony
+      - name: Install PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          tools: composer:v2, flex
+      - name: Validate composer.json and composer.lock
+        run: composer validate
+      - name: Install dependencies
+        run: composer install --prefer-dist --no-progress --quiet
+      - name: Remove doctrine/annotations
+        run: composer remove --dev doctrine/annotations
+      - name: Run test suite
+        run: composer test:unit

.github/workflows/test-suite.yml

@@ -30,20 +30,20 @@ jobs:
         run: |
           apt-get update && apt-get install -y curl
           apt-get install build-essential -y
-      - name: Run test with Rust stable
+      - name: Setup test with Rust stable
         if: github.event_name != 'schedule'
         uses: actions-rs/toolchain@v1
         with:
           toolchain: stable
           override: true
-      - name: Run test with Rust nightly
-        if: github.event_name == 'schedule'
+      - name: Setup test with Rust nightly
+        if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
         uses: actions-rs/toolchain@v1
         with:
           toolchain: nightly
           override: true
       - name: Cache dependencies
-        uses: Swatinem/rust-cache@v2.4.0
+        uses: Swatinem/rust-cache@v2.6.2
       - name: Run cargo check without any default features
         uses: actions-rs/cargo@v1
         with:
@@ -65,7 +65,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - name: Cache dependencies
-        uses: Swatinem/rust-cache@v2.4.0
+        uses: Swatinem/rust-cache@v2.6.2
       - name: Run cargo check without any default features
         uses: actions-rs/cargo@v1
         with:
@@ -78,12 +78,12 @@ jobs:
           args: --locked --release --all
 
   test-all-features:
-    name: Tests all features on cron schedule only
+    name: Tests all features
     runs-on: ubuntu-latest
     container:
       # Use ubuntu-18.04 to compile with glibc 2.27, which are the production expectations
       image: ubuntu:18.04
-    if: github.event_name == 'schedule'
+    if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
     steps:
       - uses: actions/checkout@v3
       - name: Install needed dependencies
@@ -110,24 +110,27 @@ jobs:
     runs-on: ubuntu-latest
     container:
       image: ubuntu:18.04
-    if: github.event_name == 'schedule'
+    if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
     steps:
       - uses: actions/checkout@v3
       - name: Install needed dependencies
         run: |
           apt-get update
           apt-get install --assume-yes build-essential curl
-      - uses: actions-rs/toolchain@v1 
-        with: 
-          toolchain: stable 
-          override: true 
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
       - name: Run cargo tree without default features and check lindera is not present
         run: |
-          cargo tree -f '{p} {f}' -e normal --no-default-features | grep lindera -vqz
+          if cargo tree -f '{p} {f}' -e normal --no-default-features | grep -vqz lindera; then
+            echo "lindera has been found in the sources and it shouldn't"
+            exit 1
+          fi
       - name: Run cargo tree with default features and check lindera is pressent
         run: |
           cargo tree -f '{p} {f}' -e normal | grep lindera -qz
-                
+
   # We run tests in debug also, to make sure that the debug_assertions are hit
   test-debug:
     name: Run tests in debug
@@ -146,7 +149,7 @@ jobs:
           toolchain: stable
           override: true
       - name: Cache dependencies
-        uses: Swatinem/rust-cache@v2.4.0
+        uses: Swatinem/rust-cache@v2.6.2
       - name: Run tests in debug
         uses: actions-rs/cargo@v1
         with:
@@ -161,11 +164,11 @@ jobs:
       - uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: 1.69.0
+          toolchain: 1.71.1
           override: true
           components: clippy
       - name: Cache dependencies
-        uses: Swatinem/rust-cache@v2.4.0
+        uses: Swatinem/rust-cache@v2.6.2
       - name: Run cargo clippy
         uses: actions-rs/cargo@v1
         with:
@@ -184,7 +187,7 @@ jobs:
           override: true
           components: rustfmt
       - name: Cache dependencies
-        uses: Swatinem/rust-cache@v2.4.0
+        uses: Swatinem/rust-cache@v2.6.2
       - name: Run cargo fmt
         # Since we never ran the `build.rs` script in the benchmark directory we are missing one auto-generated import file.
         # Since we want to trigger (and fail) this action as fast as possible, instead of building the benchmark crate

Cargo.toml

@@ -18,7 +18,7 @@ members = [
 ]
 
 [workspace.package]
-version = "1.3.0"
+version = "1.4.1"
 authors = ["Quentin de Quelen <quentin@dequelen.me>", "Clément Renault <clement@meilisearch.com>"]
 description = "Meilisearch HTTP server"
 homepage = "https://meilisearch.com"

PROFILING.md

@@ -0,0 +1,19 @@
+# Profiling Meilisearch
+
+Search engine technologies are complex pieces of software that require thorough profiling tools. We chose to use [Puffin](https://github.com/EmbarkStudios/puffin), which the Rust gaming industry uses extensively. You can export and import the profiling reports using the top bar's _File_ menu options [in Puffin Viewer](https://github.com/embarkstudios/puffin#ui).
+
+![An example profiling with Puffin viewer](assets/profiling-example.png)
+
+## Profiling the Indexing Process
+
+When you enable [the `exportPuffinReports` experimental feature](https://www.meilisearch.com/docs/learn/experimental/overview) of Meilisearch, Puffin reports with the `.puffin` extension will be automatically exported to disk. When this option is enabled, the engine will automatically create a "frame" whenever it executes the `IndexScheduler::tick` method.
+
+[Puffin Viewer](https://github.com/EmbarkStudios/puffin/tree/main/puffin_viewer) is used to analyze the reports. Those reports show areas where Meilisearch spent time during indexing.
+
+Another piece of advice on the Puffin viewer UI interface is to consider the _Merge children with same ID_ option. It can hide the exact actual timings at which events were sent. Please turn it off when you see strange gaps on the Flamegraph. It can help.
+
+## Profiling the Search Process
+
+We still need to take the time to profile the search side of the engine with Puffin. It would require time to profile the filtering phase, query parsing, creation, and execution. We could even profile the Actix HTTP server.
+
+The only issue we see is the framing system. Puffin requires a global frame-based profiling phase, which collides with Meilisearch's ability to accept and answer multiple requests on different threads simultaneously.

README.md

@@ -1,16 +1,20 @@
 <p align="center">
-  <img src="assets/meilisearch-logo-light.svg?sanitize=true#gh-light-mode-only">
-  <img src="assets/meilisearch-logo-dark.svg?sanitize=true#gh-dark-mode-only">
+  <a href="https://www.meilisearch.com/?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=logo#gh-light-mode-only" target="_blank">
+    <img src="assets/meilisearch-logo-light.svg?sanitize=true#gh-light-mode-only">
+  </a>
+  <a href="https://www.meilisearch.com/?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=logo#gh-dark-mode-only" target="_blank">
+    <img src="assets/meilisearch-logo-dark.svg?sanitize=true#gh-dark-mode-only">
+  </a>
 </p>
 
 <h4 align="center">
-  <a href="https://www.meilisearch.com">Website</a> |
+  <a href="https://www.meilisearch.com/?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=nav">Website</a> |
   <a href="https://roadmap.meilisearch.com/tabs/1-under-consideration">Roadmap</a> |
-  <a href="https://www.meilisearch.com/pricing?utm_campaign=oss&utm_source=engine&utm_medium=meilisearch">Meilisearch Cloud</a> |
-  <a href="https://blog.meilisearch.com">Blog</a> |
-  <a href="https://www.meilisearch.com/docs">Documentation</a> |
-  <a href="https://www.meilisearch.com/docs/faq">FAQ</a> |
-  <a href="https://discord.meilisearch.com">Discord</a>
+  <a href="https://www.meilisearch.com/pricing?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=nav">Meilisearch Cloud</a> |
+  <a href="https://blog.meilisearch.com/?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=nav">Blog</a> |
+  <a href="https://www.meilisearch.com/docs?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=nav">Documentation</a> |
+  <a href="https://www.meilisearch.com/docs/faq?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=nav">FAQ</a> |
+  <a href="https://discord.meilisearch.com/?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=nav">Discord</a>
 </h4>
 
 <p align="center">
@@ -21,43 +25,49 @@
 
 <p align="center">⚡ A lightning-fast search engine that fits effortlessly into your apps, websites, and workflow 🔍</p>
 
+---
+
+### 🔥 On November 2nd, we are hosting our first-ever live demo and product updates for [Meilisearch Cloud](https://www.meilisearch.com/cloud?utm_campaign=oss&utm_source=github&utm_medium=meilisearch). Make sure to [register here](https://us06web.zoom.us/meeting/register/tZMlc-mqrjIsH912-HTRe-AaT-pp41bDe81a#/registration) and bring your questions for live Q&A!
+
+---
+
 Meilisearch helps you shape a delightful search experience in a snap, offering features that work out-of-the-box to speed up your workflow.
 
 <p align="center" name="demo">
-  <a href="https://where2watch.meilisearch.com/#gh-light-mode-only" target="_blank">
+  <a href="https://where2watch.meilisearch.com/?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=demo-gif#gh-light-mode-only" target="_blank">
     <img src="assets/demo-light.gif#gh-light-mode-only" alt="A bright colored application for finding movies screening near the user">
   </a>
-  <a href="https://where2watch.meilisearch.com/#gh-dark-mode-only" target="_blank">
+  <a href="https://where2watch.meilisearch.com/?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=demo-gif#gh-dark-mode-only" target="_blank">
     <img src="assets/demo-dark.gif#gh-dark-mode-only" alt="A dark colored application for finding movies screening near the user">
   </a>
 </p>
 
-🔥 [**Try it!**](https://where2watch.meilisearch.com/) 🔥
+🔥 [**Try it!**](https://where2watch.meilisearch.com/?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=demo-link) 🔥
 
 ## ✨ Features
 
 - **Search-as-you-type:** find search results in less than 50 milliseconds
-- **[Typo tolerance](https://www.meilisearch.com/docs/learn/getting_started/customizing_relevancy#typo-tolerance):** get relevant matches even when queries contain typos and misspellings
-- **[Filtering](https://www.meilisearch.com/docs/learn/fine_tuning_results/filtering) and [faceted search](https://www.meilisearch.com/docs/learn/fine_tuning_results/faceted_search):** enhance your user's search experience with custom filters and build a faceted search interface in a few lines of code
-- **[Sorting](https://www.meilisearch.com/docs/learn/fine_tuning_results/sorting):** sort results based on price, date, or pretty much anything else your users need
-- **[Synonym support](https://www.meilisearch.com/docs/learn/getting_started/customizing_relevancy#synonyms):** configure synonyms to include more relevant content in your search results
-- **[Geosearch](https://www.meilisearch.com/docs/learn/fine_tuning_results/geosearch):** filter and sort documents based on geographic data
-- **[Extensive language support](https://www.meilisearch.com/docs/learn/what_is_meilisearch/language):** search datasets in any language, with optimized support for Chinese, Japanese, Hebrew, and languages using the Latin alphabet
-- **[Security management](https://www.meilisearch.com/docs/learn/security/master_api_keys):** control which users can access what data with API keys that allow fine-grained permissions handling
-- **[Multi-Tenancy](https://www.meilisearch.com/docs/learn/security/tenant_tokens):** personalize search results for any number of application tenants
+- **[Typo tolerance](https://www.meilisearch.com/docs/learn/getting_started/customizing_relevancy?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features#typo-tolerance):** get relevant matches even when queries contain typos and misspellings
+- **[Filtering](https://www.meilisearch.com/docs/learn/fine_tuning_results/filtering?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features) and [faceted search](https://www.meilisearch.com/docs/learn/fine_tuning_results/faceted_search?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features):** enhance your user's search experience with custom filters and build a faceted search interface in a few lines of code
+- **[Sorting](https://www.meilisearch.com/docs/learn/fine_tuning_results/sorting?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features):** sort results based on price, date, or pretty much anything else your users need
+- **[Synonym support](https://www.meilisearch.com/docs/learn/getting_started/customizing_relevancy?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features#synonyms):** configure synonyms to include more relevant content in your search results
+- **[Geosearch](https://www.meilisearch.com/docs/learn/fine_tuning_results/geosearch?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features):** filter and sort documents based on geographic data
+- **[Extensive language support](https://www.meilisearch.com/docs/learn/what_is_meilisearch/language?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features):** search datasets in any language, with optimized support for Chinese, Japanese, Hebrew, and languages using the Latin alphabet
+- **[Security management](https://www.meilisearch.com/docs/learn/security/master_api_keys?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features):** control which users can access what data with API keys that allow fine-grained permissions handling
+- **[Multi-Tenancy](https://www.meilisearch.com/docs/learn/security/tenant_tokens?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features):** personalize search results for any number of application tenants
 - **Highly Customizable:** customize Meilisearch to your specific needs or use our out-of-the-box and hassle-free presets
-- **[RESTful API](https://www.meilisearch.com/docs/reference/api/overview):** integrate Meilisearch in your technical stack with our plugins and SDKs
+- **[RESTful API](https://www.meilisearch.com/docs/reference/api/overview?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=features):** integrate Meilisearch in your technical stack with our plugins and SDKs
 - **Easy to install, deploy, and maintain**
 
 ## 📖 Documentation
 
-You can consult Meilisearch's documentation at [https://www.meilisearch.com/docs](https://www.meilisearch.com/docs/).
+You can consult Meilisearch's documentation at [https://www.meilisearch.com/docs](https://www.meilisearch.com/docs/?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=docs).
 
 ## 🚀 Getting started
 
-For basic instructions on how to set up Meilisearch, add documents to an index, and search for documents, take a look at our [Quick Start](https://www.meilisearch.com/docs/learn/getting_started/quick_start) guide.
+For basic instructions on how to set up Meilisearch, add documents to an index, and search for documents, take a look at our [Quick Start](https://www.meilisearch.com/docs/learn/getting_started/quick_start?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=get-started) guide.
 
-You may also want to check out [Meilisearch 101](https://www.meilisearch.com/docs/learn/getting_started/filtering_and_sorting) for an introduction to some of Meilisearch's most popular features.
+You may also want to check out [Meilisearch 101](https://www.meilisearch.com/docs/learn/getting_started/filtering_and_sorting?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=get-started) for an introduction to some of Meilisearch's most popular features.
 
 ## ⚡ Supercharge your Meilisearch experience
 
@@ -67,29 +77,29 @@ Say goodbye to server deployment and manual updates with [Meilisearch Cloud](htt
 
 Install one of our SDKs in your project for seamless integration between Meilisearch and your favorite language or framework!
 
-Take a look at the complete [Meilisearch integration list](https://www.meilisearch.com/docs/learn/what_is_meilisearch/sdks).
+Take a look at the complete [Meilisearch integration list](https://www.meilisearch.com/docs/learn/what_is_meilisearch/sdks?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=sdks-link).
 
-[![Logos belonging to different languages and frameworks supported by Meilisearch, including React, Ruby on Rails, Go, Rust, and PHP](assets/integrations.png)](https://www.meilisearch.com/docs/learn/what_is_meilisearch/sdks)
+[![Logos belonging to different languages and frameworks supported by Meilisearch, including React, Ruby on Rails, Go, Rust, and PHP](assets/integrations.png)](https://www.meilisearch.com/docs/learn/what_is_meilisearch/sdks?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=sdks-logos)
 
 ## ⚙️ Advanced usage
 
-Experienced users will want to keep our [API Reference](https://www.meilisearch.com/docs/reference/api/overview) close at hand.
+Experienced users will want to keep our [API Reference](https://www.meilisearch.com/docs/reference/api/overview?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=advanced) close at hand.
 
-We also offer a wide range of dedicated guides to all Meilisearch features, such as [filtering](https://www.meilisearch.com/docs/learn/fine_tuning_results/filtering), [sorting](https://www.meilisearch.com/docs/learn/fine_tuning_results/sorting), [geosearch](https://www.meilisearch.com/docs/learn/fine_tuning_results/geosearch), [API keys](https://www.meilisearch.com/docs/learn/security/master_api_keys), and [tenant tokens](https://www.meilisearch.com/docs/learn/security/tenant_tokens).
+We also offer a wide range of dedicated guides to all Meilisearch features, such as [filtering](https://www.meilisearch.com/docs/learn/fine_tuning_results/filtering?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=advanced), [sorting](https://www.meilisearch.com/docs/learn/fine_tuning_results/sorting?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=advanced), [geosearch](https://www.meilisearch.com/docs/learn/fine_tuning_results/geosearch?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=advanced), [API keys](https://www.meilisearch.com/docs/learn/security/master_api_keys?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=advanced), and [tenant tokens](https://www.meilisearch.com/docs/learn/security/tenant_tokens?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=advanced).
 
-Finally, for more in-depth information, refer to our articles explaining fundamental Meilisearch concepts such as [documents](https://www.meilisearch.com/docs/learn/core_concepts/documents) and [indexes](https://www.meilisearch.com/docs/learn/core_concepts/indexes).
+Finally, for more in-depth information, refer to our articles explaining fundamental Meilisearch concepts such as [documents](https://www.meilisearch.com/docs/learn/core_concepts/documents?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=advanced) and [indexes](https://www.meilisearch.com/docs/learn/core_concepts/indexes?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=advanced).
 
 ## 📊 Telemetry
 
-Meilisearch collects **anonymized** data from users to help us improve our product. You can [deactivate this](https://www.meilisearch.com/docs/learn/what_is_meilisearch/telemetry#how-to-disable-data-collection) whenever you want.
+Meilisearch collects **anonymized** data from users to help us improve our product. You can [deactivate this](https://www.meilisearch.com/docs/learn/what_is_meilisearch/telemetry?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=telemetry#how-to-disable-data-collection) whenever you want.
 
-To request deletion of collected data, please write to us at [privacy@meilisearch.com](mailto:privacy@meilisearch.com). Don't forget to include your `Instance UID` in the message, as this helps us quickly find and delete your data.
+To request deletion of collected data, please write to us at [privacy@meilisearch.com](mailto:privacy@meilisearch.com). Don't forget to include your `Instance UID` in the message, as this helps us quickly find and delete your data.
 
-If you want to know more about the kind of data we collect and what we use it for, check the [telemetry section](https://www.meilisearch.com/docs/learn/what_is_meilisearch/telemetry) of our documentation.
+If you want to know more about the kind of data we collect and what we use it for, check the [telemetry section](https://www.meilisearch.com/docs/learn/what_is_meilisearch/telemetry?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=telemetry#how-to-disable-data-collection) of our documentation.
 
 ## 📫 Get in touch!
 
-Meilisearch is a search engine created by [Meili](https://www.welcometothejungle.com/en/companies/meilisearch), a software development company based in France and with team members all over the world. Want to know more about us? [Check out our blog!](https://blog.meilisearch.com/)
+Meilisearch is a search engine created by [Meili](https://www.welcometothejungle.com/en/companies/meilisearch), a software development company based in France and with team members all over the world. Want to know more about us? [Check out our blog!](https://blog.meilisearch.com/?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=contact)
 
 🗞 [Subscribe to our newsletter](https://meilisearch.us2.list-manage.com/subscribe?u=27870f7b71c908a8b359599fb&id=79582d828e) if you don't want to miss any updates! We promise we won't clutter your mailbox: we only send one edition every two months.
 

benchmarks/Cargo.toml

@@ -14,7 +14,7 @@ license.workspace = true
 anyhow = "1.0.70"
 csv = "1.2.1"
 milli = { path = "../milli" }
-mimalloc = { version = "0.1.36", default-features = false }
+mimalloc = { version = "0.1.37", default-features = false }
 serde_json = { version = "1.0.95", features = ["preserve_order"] }
 
 [dev-dependencies]

benchmarks/benches/indexing.rs

@@ -6,9 +6,7 @@ use std::path::Path;
 
 use criterion::{criterion_group, criterion_main, Criterion};
 use milli::heed::{EnvOpenOptions, RwTxn};
-use milli::update::{
-    DeleteDocuments, IndexDocuments, IndexDocumentsConfig, IndexerConfig, Settings,
-};
+use milli::update::{IndexDocuments, IndexDocumentsConfig, IndexerConfig, Settings};
 use milli::Index;
 use rand::seq::SliceRandom;
 use rand_chacha::rand_core::SeedableRng;
@@ -266,17 +264,7 @@ fn deleting_songs_in_batches_default(c: &mut Criterion) {
                 (index, document_ids_to_delete)
             },
             move |(index, document_ids_to_delete)| {
-                let mut wtxn = index.write_txn().unwrap();
-
-                for ids in document_ids_to_delete {
-                    let mut builder = DeleteDocuments::new(&mut wtxn, &index).unwrap();
-                    builder.delete_documents(&ids);
-                    builder.execute().unwrap();
-                }
-
-                wtxn.commit().unwrap();
-
-                index.prepare_for_closing().wait();
+                delete_documents_from_ids(index, document_ids_to_delete)
             },
         )
     });
@@ -613,17 +601,7 @@ fn deleting_wiki_in_batches_default(c: &mut Criterion) {
                 (index, document_ids_to_delete)
             },
             move |(index, document_ids_to_delete)| {
-                let mut wtxn = index.write_txn().unwrap();
-
-                for ids in document_ids_to_delete {
-                    let mut builder = DeleteDocuments::new(&mut wtxn, &index).unwrap();
-                    builder.delete_documents(&ids);
-                    builder.execute().unwrap();
-                }
-
-                wtxn.commit().unwrap();
-
-                index.prepare_for_closing().wait();
+                delete_documents_from_ids(index, document_ids_to_delete)
             },
         )
     });
@@ -875,22 +853,41 @@ fn deleting_movies_in_batches_default(c: &mut Criterion) {
                 (index, document_ids_to_delete)
             },
             move |(index, document_ids_to_delete)| {
-                let mut wtxn = index.write_txn().unwrap();
-
-                for ids in document_ids_to_delete {
-                    let mut builder = DeleteDocuments::new(&mut wtxn, &index).unwrap();
-                    builder.delete_documents(&ids);
-                    builder.execute().unwrap();
-                }
-
-                wtxn.commit().unwrap();
-
-                index.prepare_for_closing().wait();
+                delete_documents_from_ids(index, document_ids_to_delete)
             },
         )
     });
 }
 
+fn delete_documents_from_ids(index: Index, document_ids_to_delete: Vec<RoaringBitmap>) {
+    let mut wtxn = index.write_txn().unwrap();
+
+    let indexer_config = IndexerConfig::default();
+    for ids in document_ids_to_delete {
+        let external_documents_ids = index.external_documents_ids();
+        // FIXME: for filters matching a lot of documents, this will allocate a huge vec of external docids (strings).
+        // Since what we have is an iterator, it would be better to delete in chunks
+        let external_to_internal: std::result::Result<Vec<_>, RoaringBitmap> =
+            external_documents_ids
+                .find_external_id_of(&wtxn, ids)
+                .unwrap()
+                .only_external_ids()
+                .collect();
+        let ids = external_to_internal.unwrap();
+        let config = IndexDocumentsConfig::default();
+
+        let mut builder =
+            IndexDocuments::new(&mut wtxn, &index, &indexer_config, config, |_| (), || false)
+                .unwrap();
+        (builder, _) = builder.remove_documents(ids).unwrap();
+        builder.execute().unwrap();
+    }
+
+    wtxn.commit().unwrap();
+
+    index.prepare_for_closing().wait();
+}
+
 fn indexing_movies_in_three_batches(c: &mut Criterion) {
     let mut group = c.benchmark_group("indexing");
     group.sample_size(BENCHMARK_ITERATION);
@@ -1112,17 +1109,7 @@ fn deleting_nested_movies_in_batches_default(c: &mut Criterion) {
                 (index, document_ids_to_delete)
             },
             move |(index, document_ids_to_delete)| {
-                let mut wtxn = index.write_txn().unwrap();
-
-                for ids in document_ids_to_delete {
-                    let mut builder = DeleteDocuments::new(&mut wtxn, &index).unwrap();
-                    builder.delete_documents(&ids);
-                    builder.execute().unwrap();
-                }
-
-                wtxn.commit().unwrap();
-
-                index.prepare_for_closing().wait();
+                delete_documents_from_ids(index, document_ids_to_delete)
             },
         )
     });
@@ -1338,17 +1325,7 @@ fn deleting_geo_in_batches_default(c: &mut Criterion) {
                 (index, document_ids_to_delete)
             },
             move |(index, document_ids_to_delete)| {
-                let mut wtxn = index.write_txn().unwrap();
-
-                for ids in document_ids_to_delete {
-                    let mut builder = DeleteDocuments::new(&mut wtxn, &index).unwrap();
-                    builder.delete_documents(&ids);
-                    builder.execute().unwrap();
-                }
-
-                wtxn.commit().unwrap();
-
-                index.prepare_for_closing().wait();
+                delete_documents_from_ids(index, document_ids_to_delete)
             },
         )
     });

dump/src/lib.rs

@@ -262,6 +262,9 @@ pub(crate) mod test {
             sortable_attributes: Setting::Set(btreeset! { S("age") }),
             ranking_rules: Setting::NotSet,
             stop_words: Setting::NotSet,
+            non_separator_tokens: Setting::NotSet,
+            separator_tokens: Setting::NotSet,
+            dictionary: Setting::NotSet,
             synonyms: Setting::NotSet,
             distinct_attribute: Setting::NotSet,
             typo_tolerance: Setting::NotSet,

dump/src/reader/compat/v5_to_v6.rs

@@ -340,6 +340,9 @@ impl<T> From<v5::Settings<T>> for v6::Settings<v6::Unchecked> {
                 }
             },
             stop_words: settings.stop_words.into(),
+            non_separator_tokens: v6::Setting::NotSet,
+            separator_tokens: v6::Setting::NotSet,
+            dictionary: v6::Setting::NotSet,
             synonyms: settings.synonyms.into(),
             distinct_attribute: settings.distinct_attribute.into(),
             typo_tolerance: match settings.typo_tolerance {

dump/src/reader/mod.rs

@@ -526,12 +526,12 @@ pub(crate) mod test {
         assert!(indexes.is_empty());
 
         // products
-        insta::assert_json_snapshot!(products.metadata(), { ".createdAt" => "[now]", ".updatedAt" => "[now]" }, @r###"
+        insta::assert_json_snapshot!(products.metadata(), @r###"
         {
           "uid": "products",
           "primaryKey": "sku",
-          "createdAt": "[now]",
-          "updatedAt": "[now]"
+          "createdAt": "2022-10-09T20:27:22.688964637Z",
+          "updatedAt": "2022-10-09T20:27:23.951017769Z"
         }
         "###);
 
@@ -541,12 +541,12 @@ pub(crate) mod test {
         meili_snap::snapshot_hash!(format!("{:#?}", documents), @"548284a84de510f71e88e6cdea495cf5");
 
         // movies
-        insta::assert_json_snapshot!(movies.metadata(), { ".createdAt" => "[now]", ".updatedAt" => "[now]" }, @r###"
+        insta::assert_json_snapshot!(movies.metadata(), @r###"
         {
           "uid": "movies",
           "primaryKey": "id",
-          "createdAt": "[now]",
-          "updatedAt": "[now]"
+          "createdAt": "2022-10-09T20:27:22.197788495Z",
+          "updatedAt": "2022-10-09T20:28:01.93111053Z"
         }
         "###);
 
@@ -571,12 +571,12 @@ pub(crate) mod test {
         meili_snap::snapshot_hash!(format!("{:#?}", documents), @"d751713988987e9331980363e24189ce");
 
         // spells
-        insta::assert_json_snapshot!(spells.metadata(), { ".createdAt" => "[now]", ".updatedAt" => "[now]" }, @r###"
+        insta::assert_json_snapshot!(spells.metadata(), @r###"
         {
           "uid": "dnd_spells",
           "primaryKey": "index",
-          "createdAt": "[now]",
-          "updatedAt": "[now]"
+          "createdAt": "2022-10-09T20:27:24.242683494Z",
+          "updatedAt": "2022-10-09T20:27:24.312809641Z"
         }
         "###);
 
@@ -617,12 +617,12 @@ pub(crate) mod test {
         assert!(indexes.is_empty());
 
         // products
-        insta::assert_json_snapshot!(products.metadata(), { ".createdAt" => "[now]", ".updatedAt" => "[now]" }, @r###"
+        insta::assert_json_snapshot!(products.metadata(), @r###"
         {
           "uid": "products",
           "primaryKey": "sku",
-          "createdAt": "[now]",
-          "updatedAt": "[now]"
+          "createdAt": "2023-01-30T16:25:56.595257Z",
+          "updatedAt": "2023-01-30T16:25:58.70348Z"
         }
         "###);
 
@@ -632,12 +632,12 @@ pub(crate) mod test {
         meili_snap::snapshot_hash!(format!("{:#?}", documents), @"548284a84de510f71e88e6cdea495cf5");
 
         // movies
-        insta::assert_json_snapshot!(movies.metadata(), { ".createdAt" => "[now]", ".updatedAt" => "[now]" }, @r###"
+        insta::assert_json_snapshot!(movies.metadata(), @r###"
         {
           "uid": "movies",
           "primaryKey": "id",
-          "createdAt": "[now]",
-          "updatedAt": "[now]"
+          "createdAt": "2023-01-30T16:25:56.192178Z",
+          "updatedAt": "2023-01-30T16:25:56.455714Z"
         }
         "###);
 
@@ -647,12 +647,12 @@ pub(crate) mod test {
         meili_snap::snapshot_hash!(format!("{:#?}", documents), @"0227598af846e574139ee0b80e03a720");
 
         // spells
-        insta::assert_json_snapshot!(spells.metadata(), { ".createdAt" => "[now]", ".updatedAt" => "[now]" }, @r###"
+        insta::assert_json_snapshot!(spells.metadata(), @r###"
         {
           "uid": "dnd_spells",
           "primaryKey": "index",
-          "createdAt": "[now]",
-          "updatedAt": "[now]"
+          "createdAt": "2023-01-30T16:25:58.876405Z",
+          "updatedAt": "2023-01-30T16:25:59.079906Z"
         }
         "###);
 

dump/src/reader/v2/mod.rs

@@ -46,6 +46,7 @@ pub type Checked = settings::Checked;
 pub type Unchecked = settings::Unchecked;
 
 pub type Task = updates::UpdateEntry;
+pub type Kind = updates::UpdateMeta;
 
 // everything related to the errors
 pub type ResponseError = errors::ResponseError;
@@ -107,8 +108,11 @@ impl V2Reader {
     pub fn indexes(&self) -> Result<impl Iterator<Item = Result<V2IndexReader>> + '_> {
         Ok(self.index_uuid.iter().map(|index| -> Result<_> {
             V2IndexReader::new(
-                index.uid.clone(),
                 &self.dump.path().join("indexes").join(format!("index-{}", index.uuid)),
+                index,
+                BufReader::new(
+                    File::open(self.dump.path().join("updates").join("data.jsonl")).unwrap(),
+                ),
             )
         }))
     }
@@ -143,16 +147,41 @@ pub struct V2IndexReader {
 }
 
 impl V2IndexReader {
-    pub fn new(name: String, path: &Path) -> Result<Self> {
+    pub fn new(path: &Path, index_uuid: &IndexUuid, tasks: BufReader<File>) -> Result<Self> {
         let meta = File::open(path.join("meta.json"))?;
         let meta: DumpMeta = serde_json::from_reader(meta)?;
 
+        let mut created_at = None;
+        let mut updated_at = None;
+
+        for line in tasks.lines() {
+            let task: Task = serde_json::from_str(&line?)?;
+            if !(task.uuid == index_uuid.uuid && task.is_finished()) {
+                continue;
+            }
+
+            let new_created_at = match task.update.meta() {
+                Kind::DocumentsAddition { .. } | Kind::Settings(_) => task.update.finished_at(),
+                _ => None,
+            };
+            let new_updated_at = task.update.finished_at();
+
+            if created_at.is_none() || created_at > new_created_at {
+                created_at = new_created_at;
+            }
+
+            if updated_at.is_none() || updated_at < new_updated_at {
+                updated_at = new_updated_at;
+            }
+        }
+
+        let current_time = OffsetDateTime::now_utc();
+
         let metadata = IndexMetadata {
-            uid: name,
+            uid: index_uuid.uid.clone(),
             primary_key: meta.primary_key,
-            // FIXME: Iterate over the whole task queue to find the creation and last update date.
-            created_at: OffsetDateTime::now_utc(),
-            updated_at: OffsetDateTime::now_utc(),
+            created_at: created_at.unwrap_or(current_time),
+            updated_at: updated_at.unwrap_or(current_time),
         };
 
         let ret = V2IndexReader {
@@ -248,12 +277,12 @@ pub(crate) mod test {
         assert!(indexes.is_empty());
 
         // products
-        insta::assert_json_snapshot!(products.metadata(), { ".createdAt" => "[now]", ".updatedAt" => "[now]" }, @r###"
+        insta::assert_json_snapshot!(products.metadata(), @r###"
         {
           "uid": "products",
           "primaryKey": "sku",
-          "createdAt": "[now]",
-          "updatedAt": "[now]"
+          "createdAt": "2022-10-09T20:27:22.688964637Z",
+          "updatedAt": "2022-10-09T20:27:23.951017769Z"
         }
         "###);
 
@@ -263,12 +292,12 @@ pub(crate) mod test {
         meili_snap::snapshot_hash!(format!("{:#?}", documents), @"548284a84de510f71e88e6cdea495cf5");
 
         // movies
-        insta::assert_json_snapshot!(movies.metadata(), { ".createdAt" => "[now]", ".updatedAt" => "[now]" }, @r###"
+        insta::assert_json_snapshot!(movies.metadata(), @r###"
         {
           "uid": "movies",
           "primaryKey": "id",
-          "createdAt": "[now]",
-          "updatedAt": "[now]"
+          "createdAt": "2022-10-09T20:27:22.197788495Z",
+          "updatedAt": "2022-10-09T20:28:01.93111053Z"
         }
         "###);
 
@@ -293,12 +322,12 @@ pub(crate) mod test {
         meili_snap::snapshot_hash!(format!("{:#?}", documents), @"d751713988987e9331980363e24189ce");
 
         // spells
-        insta::assert_json_snapshot!(spells.metadata(), { ".createdAt" => "[now]", ".updatedAt" => "[now]" }, @r###"
+        insta::assert_json_snapshot!(spells.metadata(), @r###"
         {
           "uid": "dnd_spells",
           "primaryKey": "index",
-          "createdAt": "[now]",
-          "updatedAt": "[now]"
+          "createdAt": "2022-10-09T20:27:24.242683494Z",
+          "updatedAt": "2022-10-09T20:27:24.312809641Z"
         }
         "###);
 
@@ -340,12 +369,12 @@ pub(crate) mod test {
         assert!(indexes.is_empty());
 
         // products
-        insta::assert_json_snapshot!(products.metadata(), { ".createdAt" => "[now]", ".updatedAt" => "[now]" }, @r###"
+        insta::assert_json_snapshot!(products.metadata(), @r###"
         {
           "uid": "products",
           "primaryKey": "sku",
-          "createdAt": "[now]",
-          "updatedAt": "[now]"
+          "createdAt": "2023-01-30T16:25:56.595257Z",
+          "updatedAt": "2023-01-30T16:25:58.70348Z"
         }
         "###);
 
@@ -355,12 +384,12 @@ pub(crate) mod test {
         meili_snap::snapshot_hash!(format!("{:#?}", documents), @"548284a84de510f71e88e6cdea495cf5");
 
         // movies
-        insta::assert_json_snapshot!(movies.metadata(), { ".createdAt" => "[now]", ".updatedAt" => "[now]" }, @r###"
+        insta::assert_json_snapshot!(movies.metadata(), @r###"
         {
           "uid": "movies",
           "primaryKey": "id",
-          "createdAt": "[now]",
-          "updatedAt": "[now]"
+          "createdAt": "2023-01-30T16:25:56.192178Z",
+          "updatedAt": "2023-01-30T16:25:56.455714Z"
         }
         "###);
 
@@ -370,12 +399,12 @@ pub(crate) mod test {
         meili_snap::snapshot_hash!(format!("{:#?}", documents), @"0227598af846e574139ee0b80e03a720");
 
         // spells
-        insta::assert_json_snapshot!(spells.metadata(), { ".createdAt" => "[now]", ".updatedAt" => "[now]" }, @r###"
+        insta::assert_json_snapshot!(spells.metadata(), @r###"
         {
           "uid": "dnd_spells",
           "primaryKey": "index",
-          "createdAt": "[now]",
-          "updatedAt": "[now]"
+          "createdAt": "2023-01-30T16:25:58.876405Z",
+          "updatedAt": "2023-01-30T16:25:59.079906Z"
         }
         "###);
 

dump/src/reader/v2/updates.rs

@@ -227,4 +227,14 @@ impl UpdateStatus {
             _ => None,
         }
     }
+
+    pub fn finished_at(&self) -> Option<OffsetDateTime> {
+        match self {
+            UpdateStatus::Processing(_) => None,
+            UpdateStatus::Enqueued(_) => None,
+            UpdateStatus::Processed(u) => Some(u.processed_at),
+            UpdateStatus::Aborted(_) => None,
+            UpdateStatus::Failed(u) => Some(u.failed_at),
+        }
+    }
 }

filter-parser/Cargo.toml

@@ -14,6 +14,7 @@ license.workspace = true
 [dependencies]
 nom = "7.1.3"
 nom_locate = "4.1.0"
+unescaper = "0.1.2"
 
 [dev-dependencies]
 insta = "1.29.0"

filter-parser/src/error.rs

@@ -62,6 +62,7 @@ pub enum ErrorKind<'a> {
     MisusedGeoRadius,
     MisusedGeoBoundingBox,
     InvalidPrimary,
+    InvalidEscapedNumber,
     ExpectedEof,
     ExpectedValue(ExpectedValueKind),
     MalformedValue,
@@ -147,6 +148,9 @@ impl<'a> Display for Error<'a> {
                 let text = if input.trim().is_empty() { "but instead got nothing.".to_string() } else { format!("at `{}`.", escaped_input) };
                 writeln!(f, "Was expecting an operation `=`, `!=`, `>=`, `>`, `<=`, `<`, `IN`, `NOT IN`, `TO`, `EXISTS`, `NOT EXISTS`, `IS NULL`, `IS NOT NULL`, `IS EMPTY`, `IS NOT EMPTY`, `_geoRadius`, or `_geoBoundingBox` {}", text)?
             }
+            ErrorKind::InvalidEscapedNumber => {
+                writeln!(f, "Found an invalid escaped sequence number: `{}`.", escaped_input)?
+            }
             ErrorKind::ExpectedEof => {
                 writeln!(f, "Found unexpected characters at the end of the filter: `{}`. You probably forgot an `OR` or an `AND` rule.", escaped_input)?
             }

filter-parser/src/lib.rs

@@ -545,6 +545,8 @@ impl<'a> std::fmt::Display for Token<'a> {
 
 #[cfg(test)]
 pub mod tests {
+    use FilterCondition as Fc;
+
     use super::*;
 
     /// Create a raw [Token]. You must specify the string that appear BEFORE your element followed by your element
@@ -556,14 +558,22 @@ pub mod tests {
         unsafe { Span::new_from_raw_offset(offset, lines as u32, value, "") }.into()
     }
 
+    fn p(s: &str) -> impl std::fmt::Display + '_ {
+        Fc::parse(s).unwrap().unwrap()
+    }
+
+    #[test]
+    fn parse_escaped() {
+        insta::assert_display_snapshot!(p(r#"title = 'foo\\'"#), @r#"{title} = {foo\}"#);
+        insta::assert_display_snapshot!(p(r#"title = 'foo\\\\'"#), @r#"{title} = {foo\\}"#);
+        insta::assert_display_snapshot!(p(r#"title = 'foo\\\\\\'"#), @r#"{title} = {foo\\\}"#);
+        insta::assert_display_snapshot!(p(r#"title = 'foo\\\\\\\\'"#), @r#"{title} = {foo\\\\}"#);
+        // but it also works with other sequencies
+        insta::assert_display_snapshot!(p(r#"title = 'foo\x20\n\t\"\'"'"#), @"{title} = {foo \n\t\"\'\"}");
+    }
+
     #[test]
     fn parse() {
-        use FilterCondition as Fc;
-
-        fn p(s: &str) -> impl std::fmt::Display + '_ {
-            Fc::parse(s).unwrap().unwrap()
-        }
-
         // Test equal
         insta::assert_display_snapshot!(p("channel = Ponce"), @"{channel} = {Ponce}");
         insta::assert_display_snapshot!(p("subscribers = 12"), @"{subscribers} = {12}");

filter-parser/src/value.rs

@@ -171,7 +171,24 @@ pub fn parse_value(input: Span) -> IResult<Token> {
         })
     })?;
 
-    Ok((input, value))
+    match unescaper::unescape(value.value()) {
+        Ok(content) => {
+            if content.len() != value.value().len() {
+                Ok((input, Token::new(value.original_span(), Some(content))))
+            } else {
+                Ok((input, value))
+            }
+        }
+        Err(unescaper::Error::IncompleteStr(_)) => Err(nom::Err::Incomplete(nom::Needed::Unknown)),
+        Err(unescaper::Error::ParseIntError { .. }) => Err(nom::Err::Error(Error::new_from_kind(
+            value.original_span(),
+            ErrorKind::InvalidEscapedNumber,
+        ))),
+        Err(unescaper::Error::InvalidChar { .. }) => Err(nom::Err::Error(Error::new_from_kind(
+            value.original_span(),
+            ErrorKind::MalformedValue,
+        ))),
+    }
 }
 
 fn is_value_component(c: char) -> bool {
@@ -318,17 +335,17 @@ pub mod test {
             ("\"cha'nnel\"", "cha'nnel", false),
             ("I'm tamo", "I", false),
             // escaped thing but not quote
-            (r#""\\""#, r#"\\"#, false),
-            (r#""\\\\\\""#, r#"\\\\\\"#, false),
-            (r#""aa\\aa""#, r#"aa\\aa"#, false),
+            (r#""\\""#, r#"\"#, true),
+            (r#""\\\\\\""#, r#"\\\"#, true),
+            (r#""aa\\aa""#, r#"aa\aa"#, true),
             // with double quote
             (r#""Hello \"world\"""#, r#"Hello "world""#, true),
-            (r#""Hello \\\"world\\\"""#, r#"Hello \\"world\\""#, true),
+            (r#""Hello \\\"world\\\"""#, r#"Hello \"world\""#, true),
             (r#""I'm \"super\" tamo""#, r#"I'm "super" tamo"#, true),
             (r#""\"\"""#, r#""""#, true),
             // with simple quote
             (r#"'Hello \'world\''"#, r#"Hello 'world'"#, true),
-            (r#"'Hello \\\'world\\\''"#, r#"Hello \\'world\\'"#, true),
+            (r#"'Hello \\\'world\\\''"#, r#"Hello \'world\'"#, true),
             (r#"'I\'m "super" tamo'"#, r#"I'm "super" tamo"#, true),
             (r#"'\'\''"#, r#"''"#, true),
         ];
@@ -350,7 +367,14 @@ pub mod test {
                 "Filter `{}` was not supposed to be escaped",
                 input
             );
-            assert_eq!(token.value(), expected, "Filter `{}` failed.", input);
+            assert_eq!(
+                token.value(),
+                expected,
+                "Filter `{}` failed by giving `{}` instead of `{}`.",
+                input,
+                token.value(),
+                expected
+            );
         }
     }
 

fuzzers/Cargo.toml

@@ -13,7 +13,7 @@ license.workspace = true
 [dependencies]
 arbitrary = { version = "1.3.0", features = ["derive"] }
 clap = { version = "4.3.0", features = ["derive"] }
-fastrand = "1.9.0"
+fastrand = "2.0.0"
 milli = { path = "../milli" }
 serde = { version = "1.0.160", features = ["derive"] }
 serde_json = { version = "1.0.95", features = ["preserve_order"] }

index-scheduler/Cargo.toml

@@ -22,6 +22,7 @@ log = "0.4.17"
 meilisearch-auth = { path = "../meilisearch-auth" }
 meilisearch-types = { path = "../meilisearch-types" }
 page_size = "0.5.0"
+puffin = "0.16.0"
 roaring = { version = "0.10.1", features = ["serde"] }
 serde = { version = "1.0.160", features = ["derive"] }
 serde_json = { version = "1.0.95", features = ["preserve_order"] }

index-scheduler/src/batch.rs

@@ -19,18 +19,18 @@ one indexing operation.
 
 use std::collections::{BTreeSet, HashSet};
 use std::ffi::OsStr;
+use std::fmt;
 use std::fs::{self, File};
 use std::io::BufWriter;
 
 use dump::IndexMetadata;
-use log::{debug, error, info};
+use log::{debug, error, info, trace};
 use meilisearch_types::error::Code;
 use meilisearch_types::heed::{RoTxn, RwTxn};
 use meilisearch_types::milli::documents::{obkv_to_object, DocumentsBatchReader};
 use meilisearch_types::milli::heed::CompactionOption;
 use meilisearch_types::milli::update::{
-    DeleteDocuments, DocumentDeletionResult, IndexDocumentsConfig, IndexDocumentsMethod,
-    Settings as MilliSettings,
+    IndexDocumentsConfig, IndexDocumentsMethod, IndexerConfig, Settings as MilliSettings,
 };
 use meilisearch_types::milli::{self, Filter, BEU32};
 use meilisearch_types::settings::{apply_settings_to_builder, Settings, Unchecked};
@@ -43,7 +43,7 @@ use uuid::Uuid;
 
 use crate::autobatcher::{self, BatchKind};
 use crate::utils::{self, swap_index_uid_in_task};
-use crate::{Error, IndexScheduler, ProcessingTasks, Result, TaskId};
+use crate::{Error, IndexScheduler, MustStopProcessing, ProcessingTasks, Result, TaskId};
 
 /// Represents a combination of tasks that can all be processed at the same time.
 ///
@@ -67,10 +67,6 @@ pub(crate) enum Batch {
         op: IndexOperation,
         must_create_index: bool,
     },
-    IndexDocumentDeletionByFilter {
-        index_uid: String,
-        task: Task,
-    },
     IndexCreation {
         index_uid: String,
         primary_key: Option<String>,
@@ -114,6 +110,10 @@ pub(crate) enum IndexOperation {
         documents: Vec<Vec<String>>,
         tasks: Vec<Task>,
     },
+    IndexDocumentDeletionByFilter {
+        index_uid: String,
+        task: Task,
+    },
     DocumentClear {
         index_uid: String,
         tasks: Vec<Task>,
@@ -155,7 +155,6 @@ impl Batch {
             | Batch::TaskDeletion(task)
             | Batch::Dump(task)
             | Batch::IndexCreation { task, .. }
-            | Batch::IndexDocumentDeletionByFilter { task, .. }
             | Batch::IndexUpdate { task, .. } => vec![task.uid],
             Batch::SnapshotCreation(tasks) | Batch::IndexDeletion { tasks, .. } => {
                 tasks.iter().map(|task| task.uid).collect()
@@ -167,6 +166,7 @@ impl Batch {
                 | IndexOperation::DocumentClear { tasks, .. } => {
                     tasks.iter().map(|task| task.uid).collect()
                 }
+                IndexOperation::IndexDocumentDeletionByFilter { task, .. } => vec![task.uid],
                 IndexOperation::SettingsAndDocumentOperation {
                     document_import_tasks: tasks,
                     settings_tasks: other,
@@ -194,8 +194,30 @@ impl Batch {
             IndexOperation { op, .. } => Some(op.index_uid()),
             IndexCreation { index_uid, .. }
             | IndexUpdate { index_uid, .. }
-            | IndexDeletion { index_uid, .. }
-            | IndexDocumentDeletionByFilter { index_uid, .. } => Some(index_uid),
+            | IndexDeletion { index_uid, .. } => Some(index_uid),
+        }
+    }
+}
+
+impl fmt::Display for Batch {
+    /// A text used when we debug the profiling reports.
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        let index_uid = self.index_uid();
+        let tasks = self.ids();
+        match self {
+            Batch::TaskCancelation { .. } => f.write_str("TaskCancelation")?,
+            Batch::TaskDeletion(_) => f.write_str("TaskDeletion")?,
+            Batch::SnapshotCreation(_) => f.write_str("SnapshotCreation")?,
+            Batch::Dump(_) => f.write_str("Dump")?,
+            Batch::IndexOperation { op, .. } => write!(f, "{op}")?,
+            Batch::IndexCreation { .. } => f.write_str("IndexCreation")?,
+            Batch::IndexUpdate { .. } => f.write_str("IndexUpdate")?,
+            Batch::IndexDeletion { .. } => f.write_str("IndexDeletion")?,
+            Batch::IndexSwap { .. } => f.write_str("IndexSwap")?,
+        };
+        match index_uid {
+            Some(name) => f.write_fmt(format_args!(" on {name:?} from tasks: {tasks:?}")),
+            None => f.write_fmt(format_args!(" from tasks: {tasks:?}")),
         }
     }
 }
@@ -205,6 +227,7 @@ impl IndexOperation {
         match self {
             IndexOperation::DocumentOperation { index_uid, .. }
             | IndexOperation::DocumentDeletion { index_uid, .. }
+            | IndexOperation::IndexDocumentDeletionByFilter { index_uid, .. }
             | IndexOperation::DocumentClear { index_uid, .. }
             | IndexOperation::Settings { index_uid, .. }
             | IndexOperation::DocumentClearAndSetting { index_uid, .. }
@@ -213,6 +236,30 @@ impl IndexOperation {
     }
 }
 
+impl fmt::Display for IndexOperation {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            IndexOperation::DocumentOperation { .. } => {
+                f.write_str("IndexOperation::DocumentOperation")
+            }
+            IndexOperation::DocumentDeletion { .. } => {
+                f.write_str("IndexOperation::DocumentDeletion")
+            }
+            IndexOperation::IndexDocumentDeletionByFilter { .. } => {
+                f.write_str("IndexOperation::IndexDocumentDeletionByFilter")
+            }
+            IndexOperation::DocumentClear { .. } => f.write_str("IndexOperation::DocumentClear"),
+            IndexOperation::Settings { .. } => f.write_str("IndexOperation::Settings"),
+            IndexOperation::DocumentClearAndSetting { .. } => {
+                f.write_str("IndexOperation::DocumentClearAndSetting")
+            }
+            IndexOperation::SettingsAndDocumentOperation { .. } => {
+                f.write_str("IndexOperation::SettingsAndDocumentOperation")
+            }
+        }
+    }
+}
+
 impl IndexScheduler {
     /// Convert an [`BatchKind`](crate::autobatcher::BatchKind) into a [`Batch`].
     ///
@@ -239,9 +286,12 @@ impl IndexScheduler {
                 let task = self.get_task(rtxn, id)?.ok_or(Error::CorruptedTaskQueue)?;
                 match &task.kind {
                     KindWithContent::DocumentDeletionByFilter { index_uid, .. } => {
-                        Ok(Some(Batch::IndexDocumentDeletionByFilter {
-                            index_uid: index_uid.clone(),
-                            task,
+                        Ok(Some(Batch::IndexOperation {
+                            op: IndexOperation::IndexDocumentDeletionByFilter {
+                                index_uid: index_uid.clone(),
+                                task,
+                            },
+                            must_create_index: false,
                         }))
                     }
                     _ => unreachable!(),
@@ -471,6 +521,8 @@ impl IndexScheduler {
         #[cfg(test)]
         self.maybe_fail(crate::tests::FailureLocation::InsideCreateBatch)?;
 
+        puffin::profile_function!();
+
         let enqueued = &self.get_status(rtxn, Status::Enqueued)?;
         let to_cancel = self.get_kind(rtxn, Kind::TaskCancelation)? & enqueued;
 
@@ -575,6 +627,9 @@ impl IndexScheduler {
             self.maybe_fail(crate::tests::FailureLocation::PanicInsideProcessBatch)?;
             self.breakpoint(crate::Breakpoint::InsideProcessBatch);
         }
+
+        puffin::profile_function!(batch.to_string());
+
         match batch {
             Batch::TaskCancelation { mut task, previous_started_at, previous_processing_tasks } => {
                 // 1. Retrieve the tasks that matched the query at enqueue-time.
@@ -840,7 +895,7 @@ impl IndexScheduler {
                 })?;
 
                 // 4. Dump experimental feature settings
-                let features = self.features()?.runtime_features();
+                let features = self.features().runtime_features();
                 dump.create_experimental_features(features)?;
 
                 let dump_uid = started_at.format(format_description!(
@@ -891,51 +946,6 @@ impl IndexScheduler {
 
                 Ok(tasks)
             }
-            Batch::IndexDocumentDeletionByFilter { mut task, index_uid: _ } => {
-                let (index_uid, filter) =
-                    if let KindWithContent::DocumentDeletionByFilter { index_uid, filter_expr } =
-                        &task.kind
-                    {
-                        (index_uid, filter_expr)
-                    } else {
-                        unreachable!()
-                    };
-                let index = {
-                    let rtxn = self.env.read_txn()?;
-                    self.index_mapper.index(&rtxn, index_uid)?
-                };
-                let deleted_documents = delete_document_by_filter(filter, index);
-                let original_filter = if let Some(Details::DocumentDeletionByFilter {
-                    original_filter,
-                    deleted_documents: _,
-                }) = task.details
-                {
-                    original_filter
-                } else {
-                    // In the case of a `documentDeleteByFilter` the details MUST be set
-                    unreachable!();
-                };
-
-                match deleted_documents {
-                    Ok(deleted_documents) => {
-                        task.status = Status::Succeeded;
-                        task.details = Some(Details::DocumentDeletionByFilter {
-                            original_filter,
-                            deleted_documents: Some(deleted_documents),
-                        });
-                    }
-                    Err(e) => {
-                        task.status = Status::Failed;
-                        task.details = Some(Details::DocumentDeletionByFilter {
-                            original_filter,
-                            deleted_documents: Some(0),
-                        });
-                        task.error = Some(e.into());
-                    }
-                }
-
-                Ok(vec![task])
-            }
             Batch::IndexCreation { index_uid, primary_key, task } => {
                 let wtxn = self.env.write_txn()?;
                 if self.index_mapper.exists(&wtxn, &index_uid)? {
@@ -1111,6 +1121,8 @@ impl IndexScheduler {
         index: &'i Index,
         operation: IndexOperation,
     ) -> Result<Vec<Task>> {
+        puffin::profile_function!();
+
         match operation {
             IndexOperation::DocumentClear { mut tasks, .. } => {
                 let count = milli::update::ClearDocuments::new(index_wtxn, index).execute()?;
@@ -1178,7 +1190,7 @@ impl IndexScheduler {
                     index,
                     indexer_config,
                     config,
-                    |indexing_step| debug!("update: {:?}", indexing_step),
+                    |indexing_step| trace!("update: {:?}", indexing_step),
                     || must_stop_processing.get(),
                 )?;
 
@@ -1225,7 +1237,8 @@ impl IndexScheduler {
                             let (new_builder, user_result) =
                                 builder.remove_documents(document_ids)?;
                             builder = new_builder;
-
+                            // Uses Invariant: remove documents actually always returns Ok for the inner result
+                            let count = user_result.unwrap();
                             let provided_ids =
                                 if let Some(Details::DocumentDeletion { provided_ids, .. }) =
                                     task.details
@@ -1236,23 +1249,11 @@ impl IndexScheduler {
                                     unreachable!();
                                 };
 
-                            match user_result {
-                                Ok(count) => {
-                                    task.status = Status::Succeeded;
-                                    task.details = Some(Details::DocumentDeletion {
-                                        provided_ids,
-                                        deleted_documents: Some(count),
-                                    });
-                                }
-                                Err(e) => {
-                                    task.status = Status::Failed;
-                                    task.details = Some(Details::DocumentDeletion {
-                                        provided_ids,
-                                        deleted_documents: Some(0),
-                                    });
-                                    task.error = Some(milli::Error::from(e).into());
-                                }
-                            }
+                            task.status = Status::Succeeded;
+                            task.details = Some(Details::DocumentDeletion {
+                                provided_ids,
+                                deleted_documents: Some(count),
+                            });
                         }
                     }
                 }
@@ -1267,7 +1268,7 @@ impl IndexScheduler {
                         milli::update::Settings::new(index_wtxn, index, indexer_config);
                     builder.reset_primary_key();
                     builder.execute(
-                        |indexing_step| debug!("update: {:?}", indexing_step),
+                        |indexing_step| trace!("update: {:?}", indexing_step),
                         || must_stop_processing.clone().get(),
                     )?;
                 }
@@ -1275,23 +1276,91 @@ impl IndexScheduler {
                 Ok(tasks)
             }
             IndexOperation::DocumentDeletion { index_uid: _, documents, mut tasks } => {
-                let mut builder = milli::update::DeleteDocuments::new(index_wtxn, index)?;
-                documents.iter().flatten().for_each(|id| {
-                    builder.delete_external_id(id);
-                });
+                let indexer_config = self.index_mapper.indexer_config();
+                let config = IndexDocumentsConfig {
+                    update_method: IndexDocumentsMethod::ReplaceDocuments,
+                    ..Default::default()
+                };
+                let must_stop_processing = self.must_stop_processing.clone();
 
-                let DocumentDeletionResult { deleted_documents, .. } = builder.execute()?;
+                let mut builder = milli::update::IndexDocuments::new(
+                    index_wtxn,
+                    index,
+                    indexer_config,
+                    config,
+                    |indexing_step| trace!("update: {:?}", indexing_step),
+                    || must_stop_processing.get(),
+                )?;
+
+                let document_ids = documents.iter().flatten().cloned().collect();
+
+                let (new_builder, user_result) = builder.remove_documents(document_ids)?;
+                builder = new_builder;
+                // Uses Invariant: remove documents actually always returns Ok for the inner result
+                let count = user_result.unwrap();
 
                 for (task, documents) in tasks.iter_mut().zip(documents) {
                     task.status = Status::Succeeded;
                     task.details = Some(Details::DocumentDeletion {
                         provided_ids: documents.len(),
-                        deleted_documents: Some(deleted_documents.min(documents.len() as u64)),
+                        deleted_documents: Some(count.min(documents.len() as u64)),
                     });
                 }
 
+                if !tasks.iter().all(|res| res.error.is_some()) {
+                    let addition = builder.execute()?;
+                    info!("document deletion done: {:?}", addition);
+                }
+
                 Ok(tasks)
             }
+            IndexOperation::IndexDocumentDeletionByFilter { mut task, index_uid: _ } => {
+                let filter =
+                    if let KindWithContent::DocumentDeletionByFilter { filter_expr, .. } =
+                        &task.kind
+                    {
+                        filter_expr
+                    } else {
+                        unreachable!()
+                    };
+                let deleted_documents = delete_document_by_filter(
+                    index_wtxn,
+                    filter,
+                    self.index_mapper.indexer_config(),
+                    self.must_stop_processing.clone(),
+                    index,
+                );
+                let original_filter = if let Some(Details::DocumentDeletionByFilter {
+                    original_filter,
+                    deleted_documents: _,
+                }) = task.details
+                {
+                    original_filter
+                } else {
+                    // In the case of a `documentDeleteByFilter` the details MUST be set
+                    unreachable!();
+                };
+
+                match deleted_documents {
+                    Ok(deleted_documents) => {
+                        task.status = Status::Succeeded;
+                        task.details = Some(Details::DocumentDeletionByFilter {
+                            original_filter,
+                            deleted_documents: Some(deleted_documents),
+                        });
+                    }
+                    Err(e) => {
+                        task.status = Status::Failed;
+                        task.details = Some(Details::DocumentDeletionByFilter {
+                            original_filter,
+                            deleted_documents: Some(0),
+                        });
+                        task.error = Some(e.into());
+                    }
+                }
+
+                Ok(vec![task])
+            }
             IndexOperation::Settings { index_uid: _, settings, mut tasks } => {
                 let indexer_config = self.index_mapper.indexer_config();
                 let mut builder = milli::update::Settings::new(index_wtxn, index, indexer_config);
@@ -1491,23 +1560,56 @@ impl IndexScheduler {
     }
 }
 
-fn delete_document_by_filter(filter: &serde_json::Value, index: Index) -> Result<u64> {
+fn delete_document_by_filter<'a>(
+    wtxn: &mut RwTxn<'a, '_>,
+    filter: &serde_json::Value,
+    indexer_config: &IndexerConfig,
+    must_stop_processing: MustStopProcessing,
+    index: &'a Index,
+) -> Result<u64> {
     let filter = Filter::from_json(filter)?;
     Ok(if let Some(filter) = filter {
-        let mut wtxn = index.write_txn()?;
-
-        let candidates = filter.evaluate(&wtxn, &index).map_err(|err| match err {
+        let candidates = filter.evaluate(wtxn, index).map_err(|err| match err {
             milli::Error::UserError(milli::UserError::InvalidFilter(_)) => {
                 Error::from(err).with_custom_error_code(Code::InvalidDocumentFilter)
             }
             e => e.into(),
         })?;
-        let mut delete_operation = DeleteDocuments::new(&mut wtxn, &index)?;
-        delete_operation.delete_documents(&candidates);
-        let deleted_documents =
-            delete_operation.execute().map(|result| result.deleted_documents)?;
-        wtxn.commit()?;
-        deleted_documents
+        let external_documents_ids = index.external_documents_ids();
+        // FIXME: for filters matching a lot of documents, this will allocate a huge vec of external docids (strings).
+        // Since what we have is an iterator, it would be better to delete in chunks
+        let external_to_internal: std::result::Result<Vec<_>, RoaringBitmap> =
+            external_documents_ids
+                .find_external_id_of(wtxn, candidates)?
+                .only_external_ids()
+                .collect();
+        let document_ids = match external_to_internal {
+            Ok(external_ids) => external_ids,
+            Err(remaining_ids) => panic!("Couldn't find some external ids {:?}", remaining_ids),
+        };
+
+        let config = IndexDocumentsConfig {
+            update_method: IndexDocumentsMethod::ReplaceDocuments,
+            ..Default::default()
+        };
+
+        let mut builder = milli::update::IndexDocuments::new(
+            wtxn,
+            index,
+            indexer_config,
+            config,
+            |indexing_step| debug!("update: {:?}", indexing_step),
+            || must_stop_processing.get(),
+        )?;
+
+        let (new_builder, user_result) = builder.remove_documents(document_ids)?;
+        builder = new_builder;
+        // Uses Invariant: remove documents actually always returns Ok for the inner result
+        let count = user_result.unwrap();
+
+        let _ = builder.execute()?;
+
+        count
     } else {
         0
     })

index-scheduler/src/features.rs

@@ -1,6 +1,8 @@
+use std::sync::{Arc, RwLock};
+
 use meilisearch_types::features::{InstanceTogglableFeatures, RuntimeTogglableFeatures};
 use meilisearch_types::heed::types::{SerdeJson, Str};
-use meilisearch_types::heed::{Database, Env, RoTxn, RwTxn};
+use meilisearch_types::heed::{Database, Env, RwTxn};
 
 use crate::error::FeatureNotEnabledError;
 use crate::Result;
@@ -9,20 +11,19 @@ const EXPERIMENTAL_FEATURES: &str = "experimental-features";
 
 #[derive(Clone)]
 pub(crate) struct FeatureData {
-    runtime: Database<Str, SerdeJson<RuntimeTogglableFeatures>>,
-    instance: InstanceTogglableFeatures,
+    persisted: Database<Str, SerdeJson<RuntimeTogglableFeatures>>,
+    runtime: Arc<RwLock<RuntimeTogglableFeatures>>,
 }
 
 #[derive(Debug, Clone, Copy)]
 pub struct RoFeatures {
     runtime: RuntimeTogglableFeatures,
-    instance: InstanceTogglableFeatures,
 }
 
 impl RoFeatures {
-    fn new(txn: RoTxn<'_>, data: &FeatureData) -> Result<Self> {
-        let runtime = data.runtime_features(txn)?;
-        Ok(Self { runtime, instance: data.instance })
+    fn new(data: &FeatureData) -> Self {
+        let runtime = data.runtime_features();
+        Self { runtime }
     }
 
     pub fn runtime_features(&self) -> RuntimeTogglableFeatures {
@@ -43,13 +44,13 @@ impl RoFeatures {
     }
 
     pub fn check_metrics(&self) -> Result<()> {
-        if self.instance.metrics {
+        if self.runtime.metrics {
             Ok(())
         } else {
             Err(FeatureNotEnabledError {
                 disabled_action: "Getting metrics",
                 feature: "metrics",
-                issue_link: "https://github.com/meilisearch/meilisearch/discussions/3518",
+                issue_link: "https://github.com/meilisearch/product/discussions/625",
             }
             .into())
         }
@@ -67,15 +68,36 @@ impl RoFeatures {
             .into())
         }
     }
+
+    pub fn check_puffin(&self) -> Result<()> {
+        if self.runtime.export_puffin_reports {
+            Ok(())
+        } else {
+            Err(FeatureNotEnabledError {
+                disabled_action: "Outputting Puffin reports to disk",
+                feature: "export puffin reports",
+                issue_link: "https://github.com/meilisearch/product/discussions/693",
+            }
+            .into())
+        }
+    }
 }
 
 impl FeatureData {
     pub fn new(env: &Env, instance_features: InstanceTogglableFeatures) -> Result<Self> {
         let mut wtxn = env.write_txn()?;
-        let runtime_features = env.create_database(&mut wtxn, Some(EXPERIMENTAL_FEATURES))?;
+        let runtime_features_db = env.create_database(&mut wtxn, Some(EXPERIMENTAL_FEATURES))?;
         wtxn.commit()?;
 
-        Ok(Self { runtime: runtime_features, instance: instance_features })
+        let txn = env.read_txn()?;
+        let persisted_features: RuntimeTogglableFeatures =
+            runtime_features_db.get(&txn, EXPERIMENTAL_FEATURES)?.unwrap_or_default();
+        let runtime = Arc::new(RwLock::new(RuntimeTogglableFeatures {
+            metrics: instance_features.metrics || persisted_features.metrics,
+            ..persisted_features
+        }));
+
+        Ok(Self { persisted: runtime_features_db, runtime })
     }
 
     pub fn put_runtime_features(
@@ -83,16 +105,25 @@ impl FeatureData {
         mut wtxn: RwTxn,
         features: RuntimeTogglableFeatures,
     ) -> Result<()> {
-        self.runtime.put(&mut wtxn, EXPERIMENTAL_FEATURES, &features)?;
+        self.persisted.put(&mut wtxn, EXPERIMENTAL_FEATURES, &features)?;
         wtxn.commit()?;
+
+        // safe to unwrap, the lock will only fail if:
+        // 1. requested by the same thread concurrently -> it is called and released in methods that don't call each other
+        // 2. there's a panic while the thread is held -> it is only used for an assignment here.
+        let mut toggled_features = self.runtime.write().unwrap();
+        *toggled_features = features;
         Ok(())
     }
 
-    fn runtime_features(&self, txn: RoTxn) -> Result<RuntimeTogglableFeatures> {
-        Ok(self.runtime.get(&txn, EXPERIMENTAL_FEATURES)?.unwrap_or_default())
+    fn runtime_features(&self) -> RuntimeTogglableFeatures {
+        // sound to unwrap, the lock will only fail if:
+        // 1. requested by the same thread concurrently -> it is called and released in methods that don't call each other
+        // 2. there's a panic while the thread is held -> it is only used for copying the data here
+        *self.runtime.read().unwrap()
     }
 
-    pub fn features(&self, txn: RoTxn) -> Result<RoFeatures> {
-        RoFeatures::new(txn, self)
+    pub fn features(&self) -> RoFeatures {
+        RoFeatures::new(self)
     }
 }

index-scheduler/src/insta_snapshot.rs

@@ -30,6 +30,7 @@ pub fn snapshot_index_scheduler(scheduler: &IndexScheduler) -> String {
         index_mapper,
         features: _,
         max_number_of_tasks: _,
+        puffin_frame: _,
         wake_up: _,
         dumps_path: _,
         snapshots_path: _,

index-scheduler/src/lib.rs

@@ -33,6 +33,7 @@ pub type Result<T> = std::result::Result<T, Error>;
 pub type TaskId = u32;
 
 use std::collections::{BTreeMap, HashMap};
+use std::fs::File;
 use std::ops::{Bound, RangeBounds};
 use std::path::{Path, PathBuf};
 use std::sync::atomic::AtomicBool;
@@ -52,6 +53,7 @@ use meilisearch_types::milli::documents::DocumentsBatchBuilder;
 use meilisearch_types::milli::update::IndexerConfig;
 use meilisearch_types::milli::{self, CboRoaringBitmapCodec, Index, RoaringBitmapCodec, BEU32};
 use meilisearch_types::tasks::{Kind, KindWithContent, Status, Task};
+use puffin::FrameView;
 use roaring::RoaringBitmap;
 use synchronoise::SignalEvent;
 use time::format_description::well_known::Rfc3339;
@@ -314,6 +316,9 @@ pub struct IndexScheduler {
     /// the finished tasks automatically.
     pub(crate) max_number_of_tasks: usize,
 
+    /// A frame to output the indexation profiling files to disk.
+    pub(crate) puffin_frame: Arc<puffin::GlobalFrameView>,
+
     /// The path used to create the dumps.
     pub(crate) dumps_path: PathBuf,
 
@@ -364,6 +369,7 @@ impl IndexScheduler {
             wake_up: self.wake_up.clone(),
             autobatching_enabled: self.autobatching_enabled,
             max_number_of_tasks: self.max_number_of_tasks,
+            puffin_frame: self.puffin_frame.clone(),
             snapshots_path: self.snapshots_path.clone(),
             dumps_path: self.dumps_path.clone(),
             auth_path: self.auth_path.clone(),
@@ -457,6 +463,7 @@ impl IndexScheduler {
             env,
             // we want to start the loop right away in case meilisearch was ctrl+Ced while processing things
             wake_up: Arc::new(SignalEvent::auto(true)),
+            puffin_frame: Arc::new(puffin::GlobalFrameView::default()),
             autobatching_enabled: options.autobatching_enabled,
             max_number_of_tasks: options.max_number_of_tasks,
             dumps_path: options.dumps_path,
@@ -572,17 +579,46 @@ impl IndexScheduler {
                 run.wake_up.wait();
 
                 loop {
+                    let puffin_enabled = run.features().check_puffin().is_ok();
+                    puffin::set_scopes_on(puffin_enabled);
+                    puffin::GlobalProfiler::lock().new_frame();
+
                     match run.tick() {
                         Ok(TickOutcome::TickAgain(_)) => (),
                         Ok(TickOutcome::WaitForSignal) => run.wake_up.wait(),
                         Err(e) => {
-                            log::error!("{}", e);
+                            log::error!("{e}");
                             // Wait one second when an irrecoverable error occurs.
                             if !e.is_recoverable() {
                                 std::thread::sleep(Duration::from_secs(1));
                             }
                         }
                     }
+
+                    // Let's write the previous frame to disk but only if
+                    // the user wanted to profile with puffin.
+                    if puffin_enabled {
+                        let mut frame_view = run.puffin_frame.lock();
+                        if !frame_view.is_empty() {
+                            let now = OffsetDateTime::now_utc();
+                            let mut file = match File::create(format!("{}.puffin", now)) {
+                                Ok(file) => file,
+                                Err(e) => {
+                                    log::error!("{e}");
+                                    continue;
+                                }
+                            };
+                            if let Err(e) = frame_view.save_to_writer(&mut file) {
+                                log::error!("{e}");
+                            }
+                            if let Err(e) = file.sync_all() {
+                                log::error!("{e}");
+                            }
+                            // We erase this frame view as it is no more useful. We want to
+                            // measure the new frames now that we exported the previous ones.
+                            *frame_view = FrameView::default();
+                        }
+                    }
                 }
             })
             .unwrap();
@@ -790,10 +826,19 @@ impl IndexScheduler {
 
         let mut res = BTreeMap::new();
 
+        let processing_tasks = { self.processing_tasks.read().unwrap().processing.len() };
+
         res.insert(
             "statuses".to_string(),
             enum_iterator::all::<Status>()
-                .map(|s| Ok((s.to_string(), self.get_status(&rtxn, s)?.len())))
+                .map(|s| {
+                    let tasks = self.get_status(&rtxn, s)?.len();
+                    match s {
+                        Status::Enqueued => Ok((s.to_string(), tasks - processing_tasks)),
+                        Status::Processing => Ok((s.to_string(), processing_tasks)),
+                        s => Ok((s.to_string(), tasks)),
+                    }
+                })
                 .collect::<Result<BTreeMap<String, u64>>>()?,
         );
         res.insert(
@@ -1248,9 +1293,8 @@ impl IndexScheduler {
         Ok(IndexStats { is_indexing, inner_stats: index_stats })
     }
 
-    pub fn features(&self) -> Result<RoFeatures> {
-        let rtxn = self.read_txn()?;
-        self.features.features(rtxn)
+    pub fn features(&self) -> RoFeatures {
+        self.features.features()
     }
 
     pub fn put_runtime_features(&self, features: RuntimeTogglableFeatures) -> Result<()> {
@@ -4129,4 +4173,154 @@ mod tests {
         snapshot!(json_string!(tasks, { "[].enqueuedAt" => "[date]", "[].startedAt" => "[date]", "[].finishedAt" => "[date]", ".**.original_filter" => "[filter]", ".**.query" => "[query]" }), name: "everything_has_been_processed");
         drop(rtxn);
     }
+
+    #[test]
+    fn basic_get_stats() {
+        let (index_scheduler, mut handle) = IndexScheduler::test(true, vec![]);
+
+        let kind = index_creation_task("catto", "mouse");
+        let _task = index_scheduler.register(kind).unwrap();
+        let kind = index_creation_task("doggo", "sheep");
+        let _task = index_scheduler.register(kind).unwrap();
+        let kind = index_creation_task("whalo", "fish");
+        let _task = index_scheduler.register(kind).unwrap();
+
+        snapshot!(json_string!(index_scheduler.get_stats().unwrap()), @r###"
+        {
+          "indexes": {
+            "catto": 1,
+            "doggo": 1,
+            "whalo": 1
+          },
+          "statuses": {
+            "canceled": 0,
+            "enqueued": 3,
+            "failed": 0,
+            "processing": 0,
+            "succeeded": 0
+          },
+          "types": {
+            "documentAdditionOrUpdate": 0,
+            "documentDeletion": 0,
+            "dumpCreation": 0,
+            "indexCreation": 3,
+            "indexDeletion": 0,
+            "indexSwap": 0,
+            "indexUpdate": 0,
+            "settingsUpdate": 0,
+            "snapshotCreation": 0,
+            "taskCancelation": 0,
+            "taskDeletion": 0
+          }
+        }
+        "###);
+
+        handle.advance_till([Start, BatchCreated]);
+        snapshot!(json_string!(index_scheduler.get_stats().unwrap()), @r###"
+        {
+          "indexes": {
+            "catto": 1,
+            "doggo": 1,
+            "whalo": 1
+          },
+          "statuses": {
+            "canceled": 0,
+            "enqueued": 2,
+            "failed": 0,
+            "processing": 1,
+            "succeeded": 0
+          },
+          "types": {
+            "documentAdditionOrUpdate": 0,
+            "documentDeletion": 0,
+            "dumpCreation": 0,
+            "indexCreation": 3,
+            "indexDeletion": 0,
+            "indexSwap": 0,
+            "indexUpdate": 0,
+            "settingsUpdate": 0,
+            "snapshotCreation": 0,
+            "taskCancelation": 0,
+            "taskDeletion": 0
+          }
+        }
+        "###);
+
+        handle.advance_till([
+            InsideProcessBatch,
+            InsideProcessBatch,
+            ProcessBatchSucceeded,
+            AfterProcessing,
+            Start,
+            BatchCreated,
+        ]);
+        snapshot!(json_string!(index_scheduler.get_stats().unwrap()), @r###"
+        {
+          "indexes": {
+            "catto": 1,
+            "doggo": 1,
+            "whalo": 1
+          },
+          "statuses": {
+            "canceled": 0,
+            "enqueued": 1,
+            "failed": 0,
+            "processing": 1,
+            "succeeded": 1
+          },
+          "types": {
+            "documentAdditionOrUpdate": 0,
+            "documentDeletion": 0,
+            "dumpCreation": 0,
+            "indexCreation": 3,
+            "indexDeletion": 0,
+            "indexSwap": 0,
+            "indexUpdate": 0,
+            "settingsUpdate": 0,
+            "snapshotCreation": 0,
+            "taskCancelation": 0,
+            "taskDeletion": 0
+          }
+        }
+        "###);
+
+        // now we make one more batch, the started_at field of the new tasks will be past `second_start_time`
+        handle.advance_till([
+            InsideProcessBatch,
+            InsideProcessBatch,
+            ProcessBatchSucceeded,
+            AfterProcessing,
+            Start,
+            BatchCreated,
+        ]);
+        snapshot!(json_string!(index_scheduler.get_stats().unwrap()), @r###"
+        {
+          "indexes": {
+            "catto": 1,
+            "doggo": 1,
+            "whalo": 1
+          },
+          "statuses": {
+            "canceled": 0,
+            "enqueued": 0,
+            "failed": 0,
+            "processing": 1,
+            "succeeded": 2
+          },
+          "types": {
+            "documentAdditionOrUpdate": 0,
+            "documentDeletion": 0,
+            "dumpCreation": 0,
+            "indexCreation": 3,
+            "indexDeletion": 0,
+            "indexSwap": 0,
+            "indexUpdate": 0,
+            "settingsUpdate": 0,
+            "snapshotCreation": 0,
+            "taskCancelation": 0,
+            "taskDeletion": 0
+          }
+        }
+        "###);
+    }
 }

meili-snap/src/lib.rs

@@ -167,7 +167,9 @@ macro_rules! snapshot {
         let (settings, snap_name, _) = $crate::default_snapshot_settings_for_test(test_name, Some(&snap_name));
         settings.bind(|| {
             let snap = format!("{}", $value);
-            meili_snap::insta::assert_snapshot!(format!("{}", snap_name), snap);
+            insta::allow_duplicates! {
+                meili_snap::insta::assert_snapshot!(format!("{}", snap_name), snap);
+            }
         });
     };
     ($value:expr, @$inline:literal) => {
@@ -176,7 +178,9 @@ macro_rules! snapshot {
         let (settings, _, _) = $crate::default_snapshot_settings_for_test("", Some("_dummy_argument"));
         settings.bind(|| {
             let snap = format!("{}", $value);
-            meili_snap::insta::assert_snapshot!(snap, @$inline);
+            insta::allow_duplicates! {
+                meili_snap::insta::assert_snapshot!(snap, @$inline);
+            }
         });
     };
     ($value:expr) => {
@@ -194,7 +198,9 @@ macro_rules! snapshot {
         let (settings, snap_name, _) = $crate::default_snapshot_settings_for_test(test_name, None);
         settings.bind(|| {
             let snap = format!("{}", $value);
-            meili_snap::insta::assert_snapshot!(format!("{}", snap_name), snap);
+            insta::allow_duplicates! {
+                meili_snap::insta::assert_snapshot!(format!("{}", snap_name), snap);
+            }
         });
     };
 }

meilisearch-auth/src/store.rs

@@ -129,6 +129,9 @@ impl HeedAuthStore {
                 Action::DumpsAll => {
                     actions.insert(Action::DumpsCreate);
                 }
+                Action::SnapshotsAll => {
+                    actions.insert(Action::SnapshotsCreate);
+                }
                 Action::TasksAll => {
                     actions.extend([Action::TasksGet, Action::TasksDelete, Action::TasksCancel]);
                 }

meilisearch-types/Cargo.toml

@@ -15,13 +15,13 @@ actix-web = { version = "4.3.1", default-features = false }
 anyhow = "1.0.70"
 convert_case = "0.6.0"
 csv = "1.2.1"
-deserr = "0.5.0"
+deserr = { version = "0.6.0", features = ["actix-web"]}
 either = { version = "1.8.1", features = ["serde"] }
 enum-iterator = "1.4.0"
 file-store = { path = "../file-store" }
 flate2 = "1.0.25"
 fst = "0.4.7"
-memmap2 = "0.5.10"
+memmap2 = "0.7.1"
 milli = { path = "../milli" }
 roaring = { version = "0.10.1", features = ["serde"] }
 serde = { version = "1.0.160", features = ["derive"] }

meilisearch-types/src/document_formats.rs

@@ -1,4 +1,3 @@
-use std::borrow::Borrow;
 use std::fmt::{self, Debug, Display};
 use std::fs::File;
 use std::io::{self, Seek, Write};
@@ -42,7 +41,7 @@ impl Display for DocumentFormatError {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self {
             Self::Io(e) => write!(f, "{e}"),
-            Self::MalformedPayload(me, b) => match me.borrow() {
+            Self::MalformedPayload(me, b) => match me {
                 Error::Json(se) => {
                     let mut message = match se.classify() {
                         Category::Data => {

meilisearch-types/src/error.rs

@@ -259,6 +259,9 @@ InvalidSettingsRankingRules           , InvalidRequest       , BAD_REQUEST ;
 InvalidSettingsSearchableAttributes   , InvalidRequest       , BAD_REQUEST ;
 InvalidSettingsSortableAttributes     , InvalidRequest       , BAD_REQUEST ;
 InvalidSettingsStopWords              , InvalidRequest       , BAD_REQUEST ;
+InvalidSettingsNonSeparatorTokens     , InvalidRequest       , BAD_REQUEST ;
+InvalidSettingsSeparatorTokens        , InvalidRequest       , BAD_REQUEST ;
+InvalidSettingsDictionary             , InvalidRequest       , BAD_REQUEST ;
 InvalidSettingsSynonyms               , InvalidRequest       , BAD_REQUEST ;
 InvalidSettingsTypoTolerance          , InvalidRequest       , BAD_REQUEST ;
 InvalidState                          , Internal             , INTERNAL_SERVER_ERROR ;
@@ -321,7 +324,6 @@ impl ErrorCode for milli::Error {
                     UserError::SerdeJson(_)
                     | UserError::InvalidLmdbOpenOptions
                     | UserError::DocumentLimitReached
-                    | UserError::AccessingSoftDeletedDocument { .. }
                     | UserError::UnknownInternalDocumentId { .. } => Code::Internal,
                     UserError::InvalidStoreFile => Code::InvalidStoreFile,
                     UserError::NoSpaceLeftOnDevice => Code::NoSpaceLeftOnDevice,

meilisearch-types/src/features.rs

@@ -5,6 +5,8 @@ use serde::{Deserialize, Serialize};
 pub struct RuntimeTogglableFeatures {
     pub score_details: bool,
     pub vector_store: bool,
+    pub metrics: bool,
+    pub export_puffin_reports: bool,
 }
 
 #[derive(Default, Debug, Clone, Copy)]

meilisearch-types/src/keys.rs

@@ -257,6 +257,12 @@ pub enum Action {
     #[serde(rename = "dumps.create")]
     #[deserr(rename = "dumps.create")]
     DumpsCreate,
+    #[serde(rename = "snapshots.*")]
+    #[deserr(rename = "snapshots.*")]
+    SnapshotsAll,
+    #[serde(rename = "snapshots.create")]
+    #[deserr(rename = "snapshots.create")]
+    SnapshotsCreate,
     #[serde(rename = "version")]
     #[deserr(rename = "version")]
     Version,
@@ -309,6 +315,7 @@ impl Action {
             METRICS_GET => Some(Self::MetricsGet),
             DUMPS_ALL => Some(Self::DumpsAll),
             DUMPS_CREATE => Some(Self::DumpsCreate),
+            SNAPSHOTS_CREATE => Some(Self::SnapshotsCreate),
             VERSION => Some(Self::Version),
             KEYS_CREATE => Some(Self::KeysAdd),
             KEYS_GET => Some(Self::KeysGet),
@@ -353,6 +360,7 @@ pub mod actions {
     pub const METRICS_GET: u8 = MetricsGet.repr();
     pub const DUMPS_ALL: u8 = DumpsAll.repr();
     pub const DUMPS_CREATE: u8 = DumpsCreate.repr();
+    pub const SNAPSHOTS_CREATE: u8 = SnapshotsCreate.repr();
     pub const VERSION: u8 = Version.repr();
     pub const KEYS_CREATE: u8 = KeysAdd.repr();
     pub const KEYS_GET: u8 = KeysGet.repr();

meilisearch-types/src/settings.rs

@@ -171,6 +171,15 @@ pub struct Settings<T> {
     #[deserr(default, error = DeserrJsonError<InvalidSettingsStopWords>)]
     pub stop_words: Setting<BTreeSet<String>>,
     #[serde(default, skip_serializing_if = "Setting::is_not_set")]
+    #[deserr(default, error = DeserrJsonError<InvalidSettingsNonSeparatorTokens>)]
+    pub non_separator_tokens: Setting<BTreeSet<String>>,
+    #[serde(default, skip_serializing_if = "Setting::is_not_set")]
+    #[deserr(default, error = DeserrJsonError<InvalidSettingsSeparatorTokens>)]
+    pub separator_tokens: Setting<BTreeSet<String>>,
+    #[serde(default, skip_serializing_if = "Setting::is_not_set")]
+    #[deserr(default, error = DeserrJsonError<InvalidSettingsDictionary>)]
+    pub dictionary: Setting<BTreeSet<String>>,
+    #[serde(default, skip_serializing_if = "Setting::is_not_set")]
     #[deserr(default, error = DeserrJsonError<InvalidSettingsSynonyms>)]
     pub synonyms: Setting<BTreeMap<String, Vec<String>>>,
     #[serde(default, skip_serializing_if = "Setting::is_not_set")]
@@ -201,6 +210,9 @@ impl Settings<Checked> {
             ranking_rules: Setting::Reset,
             stop_words: Setting::Reset,
             synonyms: Setting::Reset,
+            non_separator_tokens: Setting::Reset,
+            separator_tokens: Setting::Reset,
+            dictionary: Setting::Reset,
             distinct_attribute: Setting::Reset,
             typo_tolerance: Setting::Reset,
             faceting: Setting::Reset,
@@ -217,6 +229,9 @@ impl Settings<Checked> {
             sortable_attributes,
             ranking_rules,
             stop_words,
+            non_separator_tokens,
+            separator_tokens,
+            dictionary,
             synonyms,
             distinct_attribute,
             typo_tolerance,
@@ -232,6 +247,9 @@ impl Settings<Checked> {
             sortable_attributes,
             ranking_rules,
             stop_words,
+            non_separator_tokens,
+            separator_tokens,
+            dictionary,
             synonyms,
             distinct_attribute,
             typo_tolerance,
@@ -274,6 +292,9 @@ impl Settings<Unchecked> {
             ranking_rules: self.ranking_rules,
             stop_words: self.stop_words,
             synonyms: self.synonyms,
+            non_separator_tokens: self.non_separator_tokens,
+            separator_tokens: self.separator_tokens,
+            dictionary: self.dictionary,
             distinct_attribute: self.distinct_attribute,
             typo_tolerance: self.typo_tolerance,
             faceting: self.faceting,
@@ -335,6 +356,28 @@ pub fn apply_settings_to_builder(
         Setting::NotSet => (),
     }
 
+    match settings.non_separator_tokens {
+        Setting::Set(ref non_separator_tokens) => {
+            builder.set_non_separator_tokens(non_separator_tokens.clone())
+        }
+        Setting::Reset => builder.reset_non_separator_tokens(),
+        Setting::NotSet => (),
+    }
+
+    match settings.separator_tokens {
+        Setting::Set(ref separator_tokens) => {
+            builder.set_separator_tokens(separator_tokens.clone())
+        }
+        Setting::Reset => builder.reset_separator_tokens(),
+        Setting::NotSet => (),
+    }
+
+    match settings.dictionary {
+        Setting::Set(ref dictionary) => builder.set_dictionary(dictionary.clone()),
+        Setting::Reset => builder.reset_dictionary(),
+        Setting::NotSet => (),
+    }
+
     match settings.synonyms {
         Setting::Set(ref synonyms) => builder.set_synonyms(synonyms.clone().into_iter().collect()),
         Setting::Reset => builder.reset_synonyms(),
@@ -459,15 +502,14 @@ pub fn settings(
         })
         .transpose()?
         .unwrap_or_default();
+
+    let non_separator_tokens = index.non_separator_tokens(rtxn)?.unwrap_or_default();
+    let separator_tokens = index.separator_tokens(rtxn)?.unwrap_or_default();
+    let dictionary = index.dictionary(rtxn)?.unwrap_or_default();
+
     let distinct_field = index.distinct_field(rtxn)?.map(String::from);
 
-    // in milli each word in the synonyms map were split on their separator. Since we lost
-    // this information we are going to put space between words.
-    let synonyms = index
-        .synonyms(rtxn)?
-        .iter()
-        .map(|(key, values)| (key.join(" "), values.iter().map(|value| value.join(" ")).collect()))
-        .collect();
+    let synonyms = index.user_defined_synonyms(rtxn)?;
 
     let min_typo_word_len = MinWordSizeTyposSetting {
         one_typo: Setting::Set(index.min_word_len_one_typo(rtxn)?),
@@ -520,6 +562,9 @@ pub fn settings(
         sortable_attributes: Setting::Set(sortable_attributes),
         ranking_rules: Setting::Set(criteria.iter().map(|c| c.clone().into()).collect()),
         stop_words: Setting::Set(stop_words),
+        non_separator_tokens: Setting::Set(non_separator_tokens),
+        separator_tokens: Setting::Set(separator_tokens),
+        dictionary: Setting::Set(dictionary),
         distinct_attribute: match distinct_field {
             Some(field) => Setting::Set(field),
             None => Setting::Reset,
@@ -642,6 +687,9 @@ pub(crate) mod test {
             sortable_attributes: Setting::NotSet,
             ranking_rules: Setting::NotSet,
             stop_words: Setting::NotSet,
+            non_separator_tokens: Setting::NotSet,
+            separator_tokens: Setting::NotSet,
+            dictionary: Setting::NotSet,
             synonyms: Setting::NotSet,
             distinct_attribute: Setting::NotSet,
             typo_tolerance: Setting::NotSet,
@@ -663,6 +711,9 @@ pub(crate) mod test {
             sortable_attributes: Setting::NotSet,
             ranking_rules: Setting::NotSet,
             stop_words: Setting::NotSet,
+            non_separator_tokens: Setting::NotSet,
+            separator_tokens: Setting::NotSet,
+            dictionary: Setting::NotSet,
             synonyms: Setting::NotSet,
             distinct_attribute: Setting::NotSet,
             typo_tolerance: Setting::NotSet,

meilisearch/Cargo.toml

@@ -39,7 +39,7 @@ byte-unit = { version = "4.0.19", default-features = false, features = [
 bytes = "1.4.0"
 clap = { version = "4.2.1", features = ["derive", "env"] }
 crossbeam-channel = "0.5.8"
-deserr = "0.5.0"
+deserr = { version = "0.6.0", features = ["actix-web"]}
 dump = { path = "../dump" }
 either = "1.8.1"
 env_logger = "0.10.0"
@@ -50,15 +50,15 @@ futures = "0.3.28"
 futures-util = "0.3.28"
 http = "0.2.9"
 index-scheduler = { path = "../index-scheduler" }
-indexmap = { version = "1.9.3", features = ["serde-1"] }
+indexmap = { version = "2.0.0", features = ["serde"] }
 is-terminal = "0.4.8"
-itertools = "0.10.5"
+itertools = "0.11.0"
 jsonwebtoken = "8.3.0"
 lazy_static = "1.4.0"
 log = "0.4.17"
 meilisearch-auth = { path = "../meilisearch-auth" }
 meilisearch-types = { path = "../meilisearch-types" }
-mimalloc = { version = "0.1.36", default-features = false }
+mimalloc = { version = "0.1.37", default-features = false }
 mime = "0.3.17"
 num_cpus = "1.15.0"
 obkv = "0.2.0"
@@ -69,6 +69,7 @@ permissive-json-pointer = { path = "../permissive-json-pointer" }
 pin-project-lite = "0.2.9"
 platform-dirs = "0.3.0"
 prometheus = { version = "0.13.3", features = ["process"] }
+puffin = { version = "0.16.0", features = ["serialization"] }
 rand = "0.8.5"
 rayon = "1.7.0"
 regex = "1.7.3"
@@ -85,7 +86,7 @@ sha2 = "0.10.6"
 siphasher = "0.3.10"
 slice-group-by = "0.3.0"
 static-files = { version = "0.2.3", optional = true }
-sysinfo = "0.28.4"
+sysinfo = "0.29.7"
 tar = "0.4.38"
 tempfile = "3.5.0"
 thiserror = "1.0.40"
@@ -133,7 +134,17 @@ zip = { version = "0.6.4", optional = true }
 [features]
 default = ["analytics", "meilisearch-types/all-tokenizations", "mini-dashboard"]
 analytics = ["segment"]
-mini-dashboard = ["actix-web-static-files", "static-files", "anyhow", "cargo_toml", "hex", "reqwest", "sha-1", "tempfile", "zip"]
+mini-dashboard = [
+    "actix-web-static-files",
+    "static-files",
+    "anyhow",
+    "cargo_toml",
+    "hex",
+    "reqwest",
+    "sha-1",
+    "tempfile",
+    "zip",
+]
 chinese = ["meilisearch-types/chinese"]
 hebrew = ["meilisearch-types/hebrew"]
 japanese = ["meilisearch-types/japanese"]

meilisearch/src/analytics/mock_analytics.rs

@@ -20,7 +20,7 @@ pub struct SearchAggregator;
 #[allow(dead_code)]
 impl SearchAggregator {
     pub fn from_query(_: &dyn Any, _: &dyn Any) -> Self {
-        Self::default()
+        Self
     }
 
     pub fn succeed(&mut self, _: &dyn Any) {}
@@ -32,7 +32,7 @@ pub struct MultiSearchAggregator;
 #[allow(dead_code)]
 impl MultiSearchAggregator {
     pub fn from_queries(_: &dyn Any, _: &dyn Any) -> Self {
-        Self::default()
+        Self
     }
 
     pub fn succeed(&mut self) {}
@@ -44,7 +44,7 @@ pub struct FacetSearchAggregator;
 #[allow(dead_code)]
 impl FacetSearchAggregator {
     pub fn from_query(_: &dyn Any, _: &dyn Any) -> Self {
-        Self::default()
+        Self
     }
 
     pub fn succeed(&mut self, _: &dyn Any) {}

meilisearch/src/analytics/mod.rs

@@ -1,6 +1,5 @@
 mod mock_analytics;
-// if we are in release mode and the feature analytics was enabled
-#[cfg(all(not(debug_assertions), feature = "analytics"))]
+#[cfg(feature = "analytics")]
 mod segment_analytics;
 
 use std::fs;
@@ -17,26 +16,25 @@ use serde_json::Value;
 use crate::routes::indexes::documents::UpdateDocumentsQuery;
 use crate::routes::tasks::TasksFilterQuery;
 
-// if we are in debug mode OR the analytics feature is disabled
+// if the analytics feature is disabled
 // the `SegmentAnalytics` point to the mock instead of the real analytics
-#[cfg(any(debug_assertions, not(feature = "analytics")))]
+#[cfg(not(feature = "analytics"))]
 pub type SegmentAnalytics = mock_analytics::MockAnalytics;
-#[cfg(any(debug_assertions, not(feature = "analytics")))]
+#[cfg(not(feature = "analytics"))]
 pub type SearchAggregator = mock_analytics::SearchAggregator;
-#[cfg(any(debug_assertions, not(feature = "analytics")))]
+#[cfg(not(feature = "analytics"))]
 pub type MultiSearchAggregator = mock_analytics::MultiSearchAggregator;
-#[cfg(any(debug_assertions, not(feature = "analytics")))]
+#[cfg(not(feature = "analytics"))]
 pub type FacetSearchAggregator = mock_analytics::FacetSearchAggregator;
 
-// if we are in release mode and the feature analytics was enabled
-// we use the real analytics
-#[cfg(all(not(debug_assertions), feature = "analytics"))]
+// if the feature analytics is enabled we use the real analytics
+#[cfg(feature = "analytics")]
 pub type SegmentAnalytics = segment_analytics::SegmentAnalytics;
-#[cfg(all(not(debug_assertions), feature = "analytics"))]
+#[cfg(feature = "analytics")]
 pub type SearchAggregator = segment_analytics::SearchAggregator;
-#[cfg(all(not(debug_assertions), feature = "analytics"))]
+#[cfg(feature = "analytics")]
 pub type MultiSearchAggregator = segment_analytics::MultiSearchAggregator;
-#[cfg(all(not(debug_assertions), feature = "analytics"))]
+#[cfg(feature = "analytics")]
 pub type FacetSearchAggregator = segment_analytics::FacetSearchAggregator;
 
 /// The Meilisearch config dir:

meilisearch/src/lib.rs

@@ -114,10 +114,7 @@ pub fn create_app(
         .configure(routes::configure)
         .configure(|s| dashboard(s, enable_dashboard));
 
-    let app = app.wrap(actix_web::middleware::Condition::new(
-        opt.experimental_enable_metrics,
-        middleware::RouteMetrics,
-    ));
+    let app = app.wrap(middleware::RouteMetrics);
     app.wrap(
         Cors::default()
             .send_wildcard()
@@ -365,7 +362,7 @@ fn import_dump(
                 update_method: IndexDocumentsMethod::ReplaceDocuments,
                 ..Default::default()
             },
-            |indexing_step| log::debug!("update: {:?}", indexing_step),
+            |indexing_step| log::trace!("update: {:?}", indexing_step),
             || false,
         )?;
 

meilisearch/src/middleware.rs

@@ -3,8 +3,10 @@
 use std::future::{ready, Ready};
 
 use actix_web::dev::{self, Service, ServiceRequest, ServiceResponse, Transform};
+use actix_web::web::Data;
 use actix_web::Error;
 use futures_util::future::LocalBoxFuture;
+use index_scheduler::IndexScheduler;
 use prometheus::HistogramTimer;
 
 pub struct RouteMetrics;
@@ -47,19 +49,27 @@ where
 
     fn call(&self, req: ServiceRequest) -> Self::Future {
         let mut histogram_timer: Option<HistogramTimer> = None;
-        let request_path = req.path();
-        let is_registered_resource = req.resource_map().has_resource(request_path);
-        if is_registered_resource {
-            let request_method = req.method().to_string();
-            histogram_timer = Some(
-                crate::metrics::MEILISEARCH_HTTP_RESPONSE_TIME_SECONDS
+
+        // calling unwrap here is safe because index scheduler is added to app data while creating actix app.
+        // also, the tests will fail if this is not present.
+        let index_scheduler = req.app_data::<Data<IndexScheduler>>().unwrap();
+        let features = index_scheduler.features();
+
+        if features.check_metrics().is_ok() {
+            let request_path = req.path();
+            let is_registered_resource = req.resource_map().has_resource(request_path);
+            if is_registered_resource {
+                let request_method = req.method().to_string();
+                histogram_timer = Some(
+                    crate::metrics::MEILISEARCH_HTTP_RESPONSE_TIME_SECONDS
+                        .with_label_values(&[&request_method, request_path])
+                        .start_timer(),
+                );
+                crate::metrics::MEILISEARCH_HTTP_REQUESTS_TOTAL
                     .with_label_values(&[&request_method, request_path])
-                    .start_timer(),
-            );
-            crate::metrics::MEILISEARCH_HTTP_REQUESTS_TOTAL
-                .with_label_values(&[&request_method, request_path])
-                .inc();
-        }
+                    .inc();
+            }
+        };
 
         let fut = self.service.call(req);
 

meilisearch/src/option.rs

@@ -28,7 +28,7 @@ const MEILI_DB_PATH: &str = "MEILI_DB_PATH";
 const MEILI_HTTP_ADDR: &str = "MEILI_HTTP_ADDR";
 const MEILI_MASTER_KEY: &str = "MEILI_MASTER_KEY";
 const MEILI_ENV: &str = "MEILI_ENV";
-#[cfg(all(not(debug_assertions), feature = "analytics"))]
+#[cfg(feature = "analytics")]
 const MEILI_NO_ANALYTICS: &str = "MEILI_NO_ANALYTICS";
 const MEILI_HTTP_PAYLOAD_SIZE_LIMIT: &str = "MEILI_HTTP_PAYLOAD_SIZE_LIMIT";
 const MEILI_SSL_CERT_PATH: &str = "MEILI_SSL_CERT_PATH";
@@ -159,7 +159,7 @@ pub struct Opt {
     /// Meilisearch automatically collects data from all instances that do not opt out using this flag.
     /// All gathered data is used solely for the purpose of improving Meilisearch, and can be deleted
     /// at any time.
-    #[cfg(all(not(debug_assertions), feature = "analytics"))]
+    #[cfg(feature = "analytics")]
     #[serde(default)] // we can't send true
     #[clap(long, env = MEILI_NO_ANALYTICS)]
     pub no_analytics: bool,
@@ -390,7 +390,7 @@ impl Opt {
             ignore_missing_dump: _,
             ignore_dump_if_db_exists: _,
             config_file_path: _,
-            #[cfg(all(not(debug_assertions), feature = "analytics"))]
+            #[cfg(feature = "analytics")]
             no_analytics,
             experimental_enable_metrics: enable_metrics_route,
             experimental_reduce_indexing_memory_usage: reduce_indexing_memory_usage,
@@ -401,7 +401,7 @@ impl Opt {
             export_to_env_if_not_present(MEILI_MASTER_KEY, master_key);
         }
         export_to_env_if_not_present(MEILI_ENV, env);
-        #[cfg(all(not(debug_assertions), feature = "analytics"))]
+        #[cfg(feature = "analytics")]
         {
             export_to_env_if_not_present(MEILI_NO_ANALYTICS, no_analytics.to_string());
         }

meilisearch/src/routes/features.rs

@@ -29,12 +29,12 @@ async fn get_features(
     >,
     req: HttpRequest,
     analytics: Data<dyn Analytics>,
-) -> Result<HttpResponse, ResponseError> {
-    let features = index_scheduler.features()?;
+) -> HttpResponse {
+    let features = index_scheduler.features();
 
     analytics.publish("Experimental features Seen".to_string(), json!(null), Some(&req));
     debug!("returns: {:?}", features.runtime_features());
-    Ok(HttpResponse::Ok().json(features.runtime_features()))
+    HttpResponse::Ok().json(features.runtime_features())
 }
 
 #[derive(Debug, Deserr)]
@@ -44,6 +44,10 @@ pub struct RuntimeTogglableFeatures {
     pub score_details: Option<bool>,
     #[deserr(default)]
     pub vector_store: Option<bool>,
+    #[deserr(default)]
+    pub metrics: Option<bool>,
+    #[deserr(default)]
+    pub export_puffin_reports: Option<bool>,
 }
 
 async fn patch_features(
@@ -55,26 +59,36 @@ async fn patch_features(
     req: HttpRequest,
     analytics: Data<dyn Analytics>,
 ) -> Result<HttpResponse, ResponseError> {
-    let features = index_scheduler.features()?;
+    let features = index_scheduler.features();
 
     let old_features = features.runtime_features();
-
     let new_features = meilisearch_types::features::RuntimeTogglableFeatures {
         score_details: new_features.0.score_details.unwrap_or(old_features.score_details),
         vector_store: new_features.0.vector_store.unwrap_or(old_features.vector_store),
+        metrics: new_features.0.metrics.unwrap_or(old_features.metrics),
+        export_puffin_reports: new_features
+            .0
+            .export_puffin_reports
+            .unwrap_or(old_features.export_puffin_reports),
     };
 
     // explicitly destructure for analytics rather than using the `Serialize` implementation, because
     // the it renames to camelCase, which we don't want for analytics.
     // **Do not** ignore fields with `..` or `_` here, because we want to add them in the future.
-    let meilisearch_types::features::RuntimeTogglableFeatures { score_details, vector_store } =
-        new_features;
+    let meilisearch_types::features::RuntimeTogglableFeatures {
+        score_details,
+        vector_store,
+        metrics,
+        export_puffin_reports,
+    } = new_features;
 
     analytics.publish(
         "Experimental features Updated".to_string(),
         json!({
             "score_details": score_details,
             "vector_store": vector_store,
+            "metrics": metrics,
+            "export_puffin_reports": export_puffin_reports,
         }),
         Some(&req),
     );

meilisearch/src/routes/indexes/documents.rs

@@ -612,8 +612,8 @@ fn retrieve_document<S: AsRef<str>>(
     let all_fields: Vec<_> = fields_ids_map.iter().map(|(id, _)| id).collect();
 
     let internal_id = index
-        .external_documents_ids(&txn)?
-        .get(doc_id.as_bytes())
+        .external_documents_ids()
+        .get(&txn, doc_id)?
         .ok_or_else(|| MeilisearchHttpError::DocumentNotFound(doc_id.to_string()))?;
 
     let document = index

meilisearch/src/routes/indexes/facet_search.rs

@@ -68,7 +68,7 @@ pub async fn search(
     }
 
     let index = index_scheduler.index(&index_uid)?;
-    let features = index_scheduler.features()?;
+    let features = index_scheduler.features();
     let search_result = tokio::task::spawn_blocking(move || {
         perform_facet_search(&index, search_query, facet_query, facet_name, features)
     })

meilisearch/src/routes/indexes/search.rs

@@ -157,7 +157,7 @@ pub async fn search_with_url_query(
     let mut aggregate = SearchAggregator::from_query(&query, &req);
 
     let index = index_scheduler.index(&index_uid)?;
-    let features = index_scheduler.features()?;
+    let features = index_scheduler.features();
     let search_result =
         tokio::task::spawn_blocking(move || perform_search(&index, query, features)).await?;
     if let Ok(ref search_result) = search_result {
@@ -192,7 +192,7 @@ pub async fn search_with_post(
 
     let index = index_scheduler.index(&index_uid)?;
 
-    let features = index_scheduler.features()?;
+    let features = index_scheduler.features();
     let search_result =
         tokio::task::spawn_blocking(move || perform_search(&index, query, features)).await?;
     if let Ok(ref search_result) = search_result {

meilisearch/src/routes/indexes/settings.rs

@@ -310,6 +310,81 @@ make_setting_route!(
     }
 );
 
+make_setting_route!(
+    "/non-separator-tokens",
+    put,
+    std::collections::BTreeSet<String>,
+    meilisearch_types::deserr::DeserrJsonError<
+        meilisearch_types::error::deserr_codes::InvalidSettingsNonSeparatorTokens,
+    >,
+    non_separator_tokens,
+    "nonSeparatorTokens",
+    analytics,
+    |non_separator_tokens: &Option<std::collections::BTreeSet<String>>, req: &HttpRequest| {
+        use serde_json::json;
+
+        analytics.publish(
+            "nonSeparatorTokens Updated".to_string(),
+            json!({
+                "non_separator_tokens": {
+                    "total": non_separator_tokens.as_ref().map(|non_separator_tokens| non_separator_tokens.len()),
+                },
+            }),
+            Some(req),
+        );
+    }
+);
+
+make_setting_route!(
+    "/separator-tokens",
+    put,
+    std::collections::BTreeSet<String>,
+    meilisearch_types::deserr::DeserrJsonError<
+        meilisearch_types::error::deserr_codes::InvalidSettingsSeparatorTokens,
+    >,
+    separator_tokens,
+    "separatorTokens",
+    analytics,
+    |separator_tokens: &Option<std::collections::BTreeSet<String>>, req: &HttpRequest| {
+        use serde_json::json;
+
+        analytics.publish(
+            "separatorTokens Updated".to_string(),
+            json!({
+                "separator_tokens": {
+                    "total": separator_tokens.as_ref().map(|separator_tokens| separator_tokens.len()),
+                },
+            }),
+            Some(req),
+        );
+    }
+);
+
+make_setting_route!(
+    "/dictionary",
+    put,
+    std::collections::BTreeSet<String>,
+    meilisearch_types::deserr::DeserrJsonError<
+        meilisearch_types::error::deserr_codes::InvalidSettingsDictionary,
+    >,
+    dictionary,
+    "dictionary",
+    analytics,
+    |dictionary: &Option<std::collections::BTreeSet<String>>, req: &HttpRequest| {
+        use serde_json::json;
+
+        analytics.publish(
+            "dictionary Updated".to_string(),
+            json!({
+                "dictionary": {
+                    "total": dictionary.as_ref().map(|dictionary| dictionary.len()),
+                },
+            }),
+            Some(req),
+        );
+    }
+);
+
 make_setting_route!(
     "/synonyms",
     put,
@@ -466,6 +541,9 @@ generate_configure!(
     searchable_attributes,
     distinct_attribute,
     stop_words,
+    separator_tokens,
+    non_separator_tokens,
+    dictionary,
     synonyms,
     ranking_rules,
     typo_tolerance,

meilisearch/src/routes/metrics.rs

@@ -19,7 +19,7 @@ pub async fn get_metrics(
     index_scheduler: GuardedData<ActionPolicy<{ actions::METRICS_GET }>, Data<IndexScheduler>>,
     auth_controller: Data<AuthController>,
 ) -> Result<HttpResponse, ResponseError> {
-    index_scheduler.features()?.check_metrics()?;
+    index_scheduler.features().check_metrics()?;
     let auth_filters = index_scheduler.filters();
     if !auth_filters.all_indexes_authorized() {
         let mut error = ResponseError::from(AuthenticationError::InvalidToken);

meilisearch/src/routes/mod.rs

@@ -24,6 +24,7 @@ pub mod features;
 pub mod indexes;
 mod metrics;
 mod multi_search;
+mod snapshot;
 mod swap_indexes;
 pub mod tasks;
 
@@ -32,6 +33,7 @@ pub fn configure(cfg: &mut web::ServiceConfig) {
         .service(web::resource("/health").route(web::get().to(get_health)))
         .service(web::scope("/keys").configure(api_key::configure))
         .service(web::scope("/dumps").configure(dump::configure))
+        .service(web::scope("/snapshots").configure(snapshot::configure))
         .service(web::resource("/stats").route(web::get().to(get_stats)))
         .service(web::resource("/version").route(web::get().to(get_version)))
         .service(web::scope("/indexes").configure(indexes::configure))

meilisearch/src/routes/multi_search.rs

@@ -41,7 +41,7 @@ pub async fn multi_search_with_post(
     let queries = params.into_inner().queries;
 
     let mut multi_aggregate = MultiSearchAggregator::from_queries(&queries, &req);
-    let features = index_scheduler.features()?;
+    let features = index_scheduler.features();
 
     // Explicitly expect a `(ResponseError, usize)` for the error type rather than `ResponseError` only,
     // so that `?` doesn't work if it doesn't use `with_index`, ensuring that it is not forgotten in case of code

meilisearch/src/routes/snapshot.rs

@@ -0,0 +1,32 @@
+use actix_web::web::Data;
+use actix_web::{web, HttpRequest, HttpResponse};
+use index_scheduler::IndexScheduler;
+use log::debug;
+use meilisearch_types::error::ResponseError;
+use meilisearch_types::tasks::KindWithContent;
+use serde_json::json;
+
+use crate::analytics::Analytics;
+use crate::extractors::authentication::policies::*;
+use crate::extractors::authentication::GuardedData;
+use crate::extractors::sequential_extractor::SeqHandler;
+use crate::routes::SummarizedTaskView;
+
+pub fn configure(cfg: &mut web::ServiceConfig) {
+    cfg.service(web::resource("").route(web::post().to(SeqHandler(create_snapshot))));
+}
+
+pub async fn create_snapshot(
+    index_scheduler: GuardedData<ActionPolicy<{ actions::SNAPSHOTS_CREATE }>, Data<IndexScheduler>>,
+    req: HttpRequest,
+    analytics: web::Data<dyn Analytics>,
+) -> Result<HttpResponse, ResponseError> {
+    analytics.publish("Snapshot Created".to_string(), json!({}), Some(&req));
+
+    let task = KindWithContent::SnapshotCreation;
+    let task: SummarizedTaskView =
+        tokio::task::spawn_blocking(move || index_scheduler.register(task)).await??.into();
+
+    debug!("returns: {:?}", task);
+    Ok(HttpResponse::Accepted().json(task))
+}

meilisearch/src/routes/swap_indexes.rs

@@ -60,8 +60,7 @@ pub async fn swap_indexes(
     }
 
     let task = KindWithContent::IndexSwap { swaps };
-
-    let task = index_scheduler.register(task)?;
-    let task: SummarizedTaskView = task.into();
+    let task: SummarizedTaskView =
+        tokio::task::spawn_blocking(move || index_scheduler.register(task)).await??.into();
     Ok(HttpResponse::Accepted().json(task))
 }

meilisearch/src/search.rs

@@ -491,6 +491,20 @@ pub fn perform_search(
         tokenizer_builder.allow_list(&script_lang_map);
     }
 
+    let separators = index.allowed_separators(&rtxn)?;
+    let separators: Option<Vec<_>> =
+        separators.as_ref().map(|x| x.iter().map(String::as_str).collect());
+    if let Some(ref separators) = separators {
+        tokenizer_builder.separators(separators);
+    }
+
+    let dictionary = index.dictionary(&rtxn)?;
+    let dictionary: Option<Vec<_>> =
+        dictionary.as_ref().map(|x| x.iter().map(String::as_str).collect());
+    if let Some(ref dictionary) = dictionary {
+        tokenizer_builder.words_dict(dictionary);
+    }
+
     let mut formatter_builder = MatcherBuilder::new(matching_words, tokenizer_builder.build());
     formatter_builder.crop_marker(query.crop_marker);
     formatter_builder.highlight_prefix(query.highlight_pre_tag);
@@ -666,6 +680,7 @@ fn compute_semantic_score(query: &[f32], vectors: Value) -> milli::Result<Option
         .map_err(InternalError::SerdeJson)?;
     Ok(vectors
         .into_iter()
+        .flatten()
         .map(|v| OrderedFloat(dot_product_similarity(query, &v)))
         .max()
         .map(OrderedFloat::into_inner))

meilisearch/tests/auth/api_keys.rs

@@ -1,8 +1,7 @@
 use std::{thread, time};
 
-use serde_json::{json, Value};
-
-use crate::common::Server;
+use crate::common::{Server, Value};
+use crate::json;
 
 #[actix_rt::test]
 async fn add_valid_api_key() {
@@ -162,7 +161,7 @@ async fn add_valid_api_key_null_description() {
     server.use_api_key("MASTER_KEY");
 
     let content = json!({
-        "description": Value::Null,
+        "description": json!(null),
         "indexes": ["products"],
         "actions": ["documents.add"],
         "expiresAt": "2050-11-13T00:00:00"
@@ -365,7 +364,7 @@ async fn error_add_api_key_invalid_index_uids() {
     server.use_api_key("MASTER_KEY");
 
     let content = json!({
-        "description": Value::Null,
+        "description": json!(null),
         "indexes": ["invalid index # / \\name with spaces"],
         "actions": [
             "documents.add"
@@ -422,7 +421,7 @@ async fn error_add_api_key_invalid_parameters_actions() {
     meili_snap::snapshot!(code, @"400 Bad Request");
     meili_snap::snapshot!(meili_snap::json_string!(response, { ".createdAt" => "[ignored]", ".updatedAt" => "[ignored]" }), @r###"
     {
-      "message": "Unknown value `doc.add` at `.actions[0]`: expected one of `*`, `search`, `documents.*`, `documents.add`, `documents.get`, `documents.delete`, `indexes.*`, `indexes.create`, `indexes.get`, `indexes.update`, `indexes.delete`, `indexes.swap`, `tasks.*`, `tasks.cancel`, `tasks.delete`, `tasks.get`, `settings.*`, `settings.get`, `settings.update`, `stats.*`, `stats.get`, `metrics.*`, `metrics.get`, `dumps.*`, `dumps.create`, `version`, `keys.create`, `keys.get`, `keys.update`, `keys.delete`, `experimental.get`, `experimental.update`",
+      "message": "Unknown value `doc.add` at `.actions[0]`: expected one of `*`, `search`, `documents.*`, `documents.add`, `documents.get`, `documents.delete`, `indexes.*`, `indexes.create`, `indexes.get`, `indexes.update`, `indexes.delete`, `indexes.swap`, `tasks.*`, `tasks.cancel`, `tasks.delete`, `tasks.get`, `settings.*`, `settings.get`, `settings.update`, `stats.*`, `stats.get`, `metrics.*`, `metrics.get`, `dumps.*`, `dumps.create`, `snapshots.*`, `snapshots.create`, `version`, `keys.create`, `keys.get`, `keys.update`, `keys.delete`, `experimental.get`, `experimental.update`",
       "code": "invalid_api_key_actions",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#invalid_api_key_actions"
@@ -507,7 +506,7 @@ async fn error_add_api_key_invalid_parameters_uid() {
 async fn error_add_api_key_parameters_uid_already_exist() {
     let mut server = Server::new_auth().await;
     server.use_api_key("MASTER_KEY");
-    let content = json!({
+    let content: Value = json!({
         "uid": "4bc0887a-0e41-4f3b-935d-0c451dcee9c8",
         "indexes": ["products"],
         "actions": ["search"],
@@ -1146,7 +1145,7 @@ async fn patch_api_key_description() {
     meili_snap::snapshot!(code, @"200 OK");
 
     // Remove the description
-    let content = json!({ "description": serde_json::Value::Null });
+    let content = json!({ "description": null });
 
     let (response, code) = server.patch_api_key(&uid, content).await;
     meili_snap::snapshot!(meili_snap::json_string!(response, { ".createdAt" => "[ignored]", ".updatedAt" => "[ignored]", ".uid" => "[ignored]", ".key" => "[ignored]" }), @r###"

meilisearch/tests/auth/authorization.rs

@@ -2,11 +2,13 @@ use std::collections::{HashMap, HashSet};
 
 use ::time::format_description::well_known::Rfc3339;
 use maplit::{hashmap, hashset};
+use meilisearch::Opt;
 use once_cell::sync::Lazy;
-use serde_json::{json, Value};
+use tempfile::TempDir;
 use time::{Duration, OffsetDateTime};
 
-use crate::common::Server;
+use crate::common::{default_settings, Server, Value};
+use crate::json;
 
 pub static AUTHORIZATIONS: Lazy<HashMap<(&'static str, &'static str), HashSet<&'static str>>> =
     Lazy::new(|| {
@@ -54,6 +56,7 @@ pub static AUTHORIZATIONS: Lazy<HashMap<(&'static str, &'static str), HashSet<&'
             ("GET",     "/indexes/products/stats") =>                          hashset!{"stats.get", "stats.*", "*"},
             ("GET",     "/stats") =>                                           hashset!{"stats.get", "stats.*", "*"},
             ("POST",    "/dumps") =>                                           hashset!{"dumps.create", "dumps.*", "*"},
+            ("POST",    "/snapshots") =>                                       hashset!{"snapshots.create", "snapshots.*", "*"},
             ("GET",     "/version") =>                                         hashset!{"version", "*"},
             ("GET",     "/metrics") =>                                         hashset!{"metrics.get", "metrics.*", "*"},
             ("PATCH",   "/keys/mykey/") =>                                     hashset!{"keys.update", "*"},
@@ -194,7 +197,9 @@ async fn access_authorized_master_key() {
 
 #[actix_rt::test]
 async fn access_authorized_restricted_index() {
-    let mut server = Server::new_auth().await;
+    let dir = TempDir::new().unwrap();
+    let enable_metrics = Opt { experimental_enable_metrics: true, ..default_settings(dir.path()) };
+    let mut server = Server::new_auth_with_options(enable_metrics, dir).await;
     for ((method, route), actions) in AUTHORIZATIONS.iter() {
         for action in actions {
             // create a new API key letting only the needed action.

meilisearch/tests/auth/errors.rs

@@ -1,8 +1,8 @@
 use meili_snap::*;
-use serde_json::json;
 use uuid::Uuid;
 
 use crate::common::Server;
+use crate::json;
 
 #[actix_rt::test]
 async fn create_api_key_bad_description() {
@@ -90,7 +90,7 @@ async fn create_api_key_bad_actions() {
     snapshot!(code, @"400 Bad Request");
     snapshot!(json_string!(response), @r###"
     {
-      "message": "Unknown value `doggo` at `.actions[0]`: expected one of `*`, `search`, `documents.*`, `documents.add`, `documents.get`, `documents.delete`, `indexes.*`, `indexes.create`, `indexes.get`, `indexes.update`, `indexes.delete`, `indexes.swap`, `tasks.*`, `tasks.cancel`, `tasks.delete`, `tasks.get`, `settings.*`, `settings.get`, `settings.update`, `stats.*`, `stats.get`, `metrics.*`, `metrics.get`, `dumps.*`, `dumps.create`, `version`, `keys.create`, `keys.get`, `keys.update`, `keys.delete`, `experimental.get`, `experimental.update`",
+      "message": "Unknown value `doggo` at `.actions[0]`: expected one of `*`, `search`, `documents.*`, `documents.add`, `documents.get`, `documents.delete`, `indexes.*`, `indexes.create`, `indexes.get`, `indexes.update`, `indexes.delete`, `indexes.swap`, `tasks.*`, `tasks.cancel`, `tasks.delete`, `tasks.get`, `settings.*`, `settings.get`, `settings.update`, `stats.*`, `stats.get`, `metrics.*`, `metrics.get`, `dumps.*`, `dumps.create`, `snapshots.*`, `snapshots.create`, `version`, `keys.create`, `keys.get`, `keys.update`, `keys.delete`, `experimental.get`, `experimental.update`",
       "code": "invalid_api_key_actions",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#invalid_api_key_actions"

meilisearch/tests/auth/mod.rs

@@ -7,9 +7,9 @@ mod tenant_token;
 mod tenant_token_multi_search;
 
 use actix_web::http::StatusCode;
-use serde_json::{json, Value};
 
-use crate::common::Server;
+use crate::common::{Server, Value};
+use crate::json;
 
 impl Server {
     pub fn use_api_key(&mut self, api_key: impl AsRef<str>) {

meilisearch/tests/auth/tenant_token.rs

@@ -3,11 +3,11 @@ use std::collections::HashMap;
 use ::time::format_description::well_known::Rfc3339;
 use maplit::hashmap;
 use once_cell::sync::Lazy;
-use serde_json::{json, Value};
 use time::{Duration, OffsetDateTime};
 
 use super::authorization::{ALL_ACTIONS, AUTHORIZATIONS};
-use crate::common::Server;
+use crate::common::{Server, Value};
+use crate::json;
 
 fn generate_tenant_token(
     parent_uid: impl AsRef<str>,
@@ -233,31 +233,31 @@ async fn search_authorized_simple_token() {
         },
         hashmap! {
             "searchRules" => json!({"*": {}}),
-            "exp" => Value::Null
+            "exp" => json!(null)
         },
         hashmap! {
-            "searchRules" => json!({"*": Value::Null}),
-            "exp" => Value::Null
+            "searchRules" => json!({"*": null}),
+            "exp" => json!(null)
         },
         hashmap! {
             "searchRules" => json!(["*"]),
-            "exp" => Value::Null
+            "exp" => json!(null)
         },
         hashmap! {
             "searchRules" => json!({"sales": {}}),
-            "exp" => Value::Null
+            "exp" => json!(null)
         },
         hashmap! {
-            "searchRules" => json!({"sales": Value::Null}),
-            "exp" => Value::Null
+            "searchRules" => json!({"sales": null}),
+            "exp" => json!(null)
         },
         hashmap! {
             "searchRules" => json!(["sales"]),
-            "exp" => Value::Null
+            "exp" => json!(null)
         },
         hashmap! {
             "searchRules" => json!(["sa*"]),
-            "exp" => Value::Null
+            "exp" => json!(null)
         },
     ];
 
@@ -386,7 +386,7 @@ async fn error_search_token_forbidden_parent_key() {
             "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
-            "searchRules" => json!({"*": Value::Null}),
+            "searchRules" => json!({"*": null}),
             "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
@@ -398,7 +398,7 @@ async fn error_search_token_forbidden_parent_key() {
             "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
-            "searchRules" => json!({"sales": Value::Null}),
+            "searchRules" => json!({"sales": null}),
             "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
@@ -428,15 +428,15 @@ async fn error_search_forbidden_token() {
         },
         hashmap! {
             "searchRules" => json!({"products": {}}),
-            "exp" => Value::Null
+            "exp" => json!(null)
         },
         hashmap! {
-            "searchRules" => json!({"products": Value::Null}),
-            "exp" => Value::Null
+            "searchRules" => json!({"products": null}),
+            "exp" => json!(null)
         },
         hashmap! {
             "searchRules" => json!(["products"]),
-            "exp" => Value::Null
+            "exp" => json!(null)
         },
         // expired token
         hashmap! {
@@ -444,7 +444,7 @@ async fn error_search_forbidden_token() {
             "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
-            "searchRules" => json!({"*": Value::Null}),
+            "searchRules" => json!({"*": null}),
             "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
@@ -456,7 +456,7 @@ async fn error_search_forbidden_token() {
             "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
-            "searchRules" => json!({"sales": Value::Null}),
+            "searchRules" => json!({"sales": null}),
             "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
         },
         hashmap! {

meilisearch/tests/auth/tenant_token_multi_search.rs

@@ -3,11 +3,11 @@ use std::collections::HashMap;
 use ::time::format_description::well_known::Rfc3339;
 use maplit::hashmap;
 use once_cell::sync::Lazy;
-use serde_json::{json, Value};
 use time::{Duration, OffsetDateTime};
 
 use super::authorization::ALL_ACTIONS;
-use crate::common::Server;
+use crate::common::{Server, Value};
+use crate::json;
 
 fn generate_tenant_token(
     parent_uid: impl AsRef<str>,
@@ -512,31 +512,31 @@ async fn single_search_authorized_simple_token() {
         },
         hashmap! {
             "searchRules" => json!({"*": {}}),
-            "exp" => Value::Null
+            "exp" => json!(null),
         },
         hashmap! {
-            "searchRules" => json!({"*": Value::Null}),
-            "exp" => Value::Null
+            "searchRules" => json!({"*": null}),
+            "exp" => json!(null),
         },
         hashmap! {
             "searchRules" => json!(["*"]),
-            "exp" => Value::Null
+            "exp" => json!(null),
         },
         hashmap! {
             "searchRules" => json!({"sales": {}}),
-            "exp" => Value::Null
+            "exp" => json!(null),
         },
         hashmap! {
-            "searchRules" => json!({"sales": Value::Null}),
-            "exp" => Value::Null
+            "searchRules" => json!({"sales": null}),
+            "exp" => json!(null),
         },
         hashmap! {
             "searchRules" => json!(["sales"]),
-            "exp" => Value::Null
+            "exp" => json!(null),
         },
         hashmap! {
             "searchRules" => json!(["sa*"]),
-            "exp" => Value::Null
+            "exp" => json!(null),
         },
     ];
 
@@ -564,31 +564,31 @@ async fn multi_search_authorized_simple_token() {
         },
         hashmap! {
             "searchRules" => json!({"*": {}}),
-            "exp" => Value::Null
+            "exp" => json!(null),
         },
         hashmap! {
-            "searchRules" => json!({"*": Value::Null}),
-            "exp" => Value::Null
+            "searchRules" => json!({"*": null}),
+            "exp" => json!(null),
         },
         hashmap! {
             "searchRules" => json!(["*"]),
-            "exp" => Value::Null
+            "exp" => json!(null),
         },
         hashmap! {
             "searchRules" => json!({"sales": {}, "products": {}}),
-            "exp" => Value::Null
+            "exp" => json!(null),
         },
         hashmap! {
-            "searchRules" => json!({"sales": Value::Null, "products": Value::Null}),
-            "exp" => Value::Null
+            "searchRules" => json!({"sales": null, "products": null}),
+            "exp" => json!(null),
         },
         hashmap! {
             "searchRules" => json!(["sales", "products"]),
-            "exp" => Value::Null
+            "exp" => json!(null),
         },
         hashmap! {
             "searchRules" => json!(["sa*", "pro*"]),
-            "exp" => Value::Null
+            "exp" => json!(null),
         },
     ];
 
@@ -823,7 +823,7 @@ async fn error_single_search_token_forbidden_parent_key() {
             "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
-            "searchRules" => json!({"*": Value::Null}),
+            "searchRules" => json!({"*": null}),
             "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
@@ -835,7 +835,7 @@ async fn error_single_search_token_forbidden_parent_key() {
             "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
-            "searchRules" => json!({"sales": Value::Null}),
+            "searchRules" => json!({"sales": null}),
             "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
@@ -864,7 +864,7 @@ async fn error_multi_search_token_forbidden_parent_key() {
             "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
-            "searchRules" => json!({"*": Value::Null}),
+            "searchRules" => json!({"*": null}),
             "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
@@ -876,7 +876,7 @@ async fn error_multi_search_token_forbidden_parent_key() {
             "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
-            "searchRules" => json!({"sales": Value::Null, "products": Value::Null}),
+            "searchRules" => json!({"sales": null, "products": null}),
             "exp" => json!((OffsetDateTime::now_utc() + Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
@@ -919,15 +919,15 @@ async fn error_single_search_forbidden_token() {
         },
         hashmap! {
             "searchRules" => json!({"products": {}}),
-            "exp" => Value::Null
+            "exp" => json!(null),
         },
         hashmap! {
-            "searchRules" => json!({"products": Value::Null}),
-            "exp" => Value::Null
+            "searchRules" => json!({"products": null}),
+            "exp" => json!(null),
         },
         hashmap! {
             "searchRules" => json!(["products"]),
-            "exp" => Value::Null
+            "exp" => json!(null),
         },
         // expired token
         hashmap! {
@@ -935,7 +935,7 @@ async fn error_single_search_forbidden_token() {
             "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
-            "searchRules" => json!({"*": Value::Null}),
+            "searchRules" => json!({"*": null}),
             "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
@@ -947,7 +947,7 @@ async fn error_single_search_forbidden_token() {
             "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
-            "searchRules" => json!({"sales": Value::Null}),
+            "searchRules" => json!({"sales": null}),
             "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
@@ -978,15 +978,15 @@ async fn error_multi_search_forbidden_token() {
         },
         hashmap! {
             "searchRules" => json!({"products": {}}),
-            "exp" => Value::Null
+            "exp" => json!(null),
         },
         hashmap! {
-            "searchRules" => json!({"products": Value::Null}),
-            "exp" => Value::Null
+            "searchRules" => json!({"products": null}),
+            "exp" => json!(null),
         },
         hashmap! {
             "searchRules" => json!(["products"]),
-            "exp" => Value::Null
+            "exp" => json!(null),
         },
         hashmap! {
             "searchRules" => json!({"sales": {}}),
@@ -998,15 +998,15 @@ async fn error_multi_search_forbidden_token() {
         },
         hashmap! {
             "searchRules" => json!({"sales": {}}),
-            "exp" => Value::Null
+            "exp" => json!(null),
         },
         hashmap! {
-            "searchRules" => json!({"sales": Value::Null}),
-            "exp" => Value::Null
+            "searchRules" => json!({"sales": null}),
+            "exp" => json!(null),
         },
         hashmap! {
             "searchRules" => json!(["sales"]),
-            "exp" => Value::Null
+            "exp" => json!(null),
         },
         // expired token
         hashmap! {
@@ -1014,7 +1014,7 @@ async fn error_multi_search_forbidden_token() {
             "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
-            "searchRules" => json!({"*": Value::Null}),
+            "searchRules" => json!({"*": null}),
             "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
@@ -1026,7 +1026,7 @@ async fn error_multi_search_forbidden_token() {
             "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
         },
         hashmap! {
-            "searchRules" => json!({"sales": Value::Null, "products": {}}),
+            "searchRules" => json!({"sales": null, "products": {}}),
             "exp" => json!((OffsetDateTime::now_utc() - Duration::hours(1)).unix_timestamp())
         },
         hashmap! {

meilisearch/tests/common/index.rs

@@ -3,12 +3,13 @@ use std::panic::{catch_unwind, resume_unwind, UnwindSafe};
 use std::time::Duration;
 
 use actix_web::http::StatusCode;
-use serde_json::{json, Value};
 use tokio::time::sleep;
 use urlencoding::encode as urlencode;
 
 use super::encoder::Encoder;
 use super::service::Service;
+use super::Value;
+use crate::json;
 
 pub struct Index<'a> {
     pub uid: String,
@@ -242,7 +243,9 @@ impl Index<'_> {
 
     pub async fn delete_batch(&self, ids: Vec<u64>) -> (Value, StatusCode) {
         let url = format!("/indexes/{}/documents/delete-batch", urlencode(self.uid.as_ref()));
-        self.service.post_encoded(url, serde_json::to_value(&ids).unwrap(), self.encoder).await
+        self.service
+            .post_encoded(url, serde_json::to_value(&ids).unwrap().into(), self.encoder)
+            .await
     }
 
     pub async fn delete_batch_raw(&self, body: Value) -> (Value, StatusCode) {

meilisearch/tests/common/mod.rs

@@ -3,9 +3,83 @@ pub mod index;
 pub mod server;
 pub mod service;
 
+use std::fmt::{self, Display};
+
 pub use index::{GetAllDocumentsOptions, GetDocumentOptions};
+use meili_snap::json_string;
+use serde::{Deserialize, Serialize};
 pub use server::{default_settings, Server};
 
+#[derive(Debug, Clone, Default, Serialize, Deserialize, PartialEq, Eq)]
+pub struct Value(pub serde_json::Value);
+
+impl Value {
+    pub fn uid(&self) -> u64 {
+        if let Some(uid) = self["uid"].as_u64() {
+            uid
+        } else if let Some(uid) = self["taskUid"].as_u64() {
+            uid
+        } else {
+            panic!("Didn't find any task id in: {self}");
+        }
+    }
+}
+
+impl From<serde_json::Value> for Value {
+    fn from(value: serde_json::Value) -> Self {
+        Value(value)
+    }
+}
+
+impl std::ops::Deref for Value {
+    type Target = serde_json::Value;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl PartialEq<serde_json::Value> for Value {
+    fn eq(&self, other: &serde_json::Value) -> bool {
+        &self.0 == other
+    }
+}
+
+impl PartialEq<Value> for serde_json::Value {
+    fn eq(&self, other: &Value) -> bool {
+        self == &other.0
+    }
+}
+
+impl PartialEq<&str> for Value {
+    fn eq(&self, other: &&str) -> bool {
+        self.0.eq(other)
+    }
+}
+
+impl Display for Value {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(
+            f,
+            "{}",
+            json_string!(self, { ".enqueuedAt" => "[date]", ".processedAt" => "[date]", ".finishedAt" => "[date]", ".duration" => "[duration]" })
+        )
+    }
+}
+
+impl From<Vec<Value>> for Value {
+    fn from(value: Vec<Value>) -> Self {
+        Self(value.into_iter().map(|value| value.0).collect::<serde_json::Value>())
+    }
+}
+
+#[macro_export]
+macro_rules! json {
+    ($($json:tt)+) => {
+        $crate::common::Value(serde_json::json!($($json)+))
+    };
+}
+
 /// Performs a search test on both post and get routes
 #[macro_export]
 macro_rules! test_post_get_search {

meilisearch/tests/common/server.rs

@@ -11,13 +11,14 @@ use clap::Parser;
 use meilisearch::option::{IndexerOpts, MaxMemory, Opt};
 use meilisearch::{analytics, create_app, setup_meilisearch};
 use once_cell::sync::Lazy;
-use serde_json::{json, Value};
 use tempfile::TempDir;
 use tokio::time::sleep;
 
 use super::index::Index;
 use super::service::Service;
 use crate::common::encoder::Encoder;
+use crate::common::Value;
+use crate::json;
 
 pub struct Server {
     pub service: Service,
@@ -156,6 +157,10 @@ impl Server {
         self.service.post("/dumps", json!(null)).await
     }
 
+    pub async fn create_snapshot(&self) -> (Value, StatusCode) {
+        self.service.post("/snapshots", json!(null)).await
+    }
+
     pub async fn index_swap(&self, value: Value) -> (Value, StatusCode) {
         self.service.post("/swap-indexes", value).await
     }
@@ -197,6 +202,10 @@ impl Server {
     pub async fn set_features(&self, value: Value) -> (Value, StatusCode) {
         self.service.patch("/experimental-features", value).await
     }
+
+    pub async fn get_metrics(&self) -> (Value, StatusCode) {
+        self.service.get("/metrics").await
+    }
 }
 
 pub fn default_settings(dir: impl AsRef<Path>) -> Opt {
@@ -204,7 +213,7 @@ pub fn default_settings(dir: impl AsRef<Path>) -> Opt {
         db_path: dir.as_ref().join("db"),
         dump_dir: dir.as_ref().join("dumps"),
         env: "development".to_owned(),
-        #[cfg(all(not(debug_assertions), feature = "analytics"))]
+        #[cfg(feature = "analytics")]
         no_analytics: true,
         max_index_size: Byte::from_unit(100.0, ByteUnit::MiB).unwrap(),
         max_task_db_size: Byte::from_unit(1.0, ByteUnit::GiB).unwrap(),
@@ -216,7 +225,7 @@ pub fn default_settings(dir: impl AsRef<Path>) -> Opt {
             skip_index_budget: true,
             ..Parser::parse_from(None as Option<&str>)
         },
-        experimental_enable_metrics: true,
+        experimental_enable_metrics: false,
         ..Parser::parse_from(None as Option<&str>)
     }
 }

meilisearch/tests/common/service.rs

@@ -7,9 +7,9 @@ use actix_web::test::TestRequest;
 use index_scheduler::IndexScheduler;
 use meilisearch::{analytics, create_app, Opt};
 use meilisearch_auth::AuthController;
-use serde_json::Value;
 
 use crate::common::encoder::Encoder;
+use crate::common::Value;
 
 pub struct Service {
     pub index_scheduler: Arc<IndexScheduler>,

meilisearch/tests/content_type.rs

@@ -3,9 +3,8 @@
 mod common;
 
 use actix_web::test;
-use serde_json::{json, Value};
 
-use crate::common::Server;
+use crate::common::{Server, Value};
 
 enum HttpVerb {
     Put,

meilisearch/tests/documents/add_documents.rs

@@ -1,11 +1,11 @@
 use actix_web::test;
 use meili_snap::{json_string, snapshot};
-use serde_json::{json, Value};
 use time::format_description::well_known::Rfc3339;
 use time::OffsetDateTime;
 
 use crate::common::encoder::Encoder;
-use crate::common::{GetAllDocumentsOptions, Server};
+use crate::common::{GetAllDocumentsOptions, Server, Value};
+use crate::json;
 
 /// This is the basic usage of our API and every other tests uses the content-type application/json
 #[actix_rt::test]

meilisearch/tests/documents/delete_documents.rs

@@ -1,7 +1,7 @@
 use meili_snap::{json_string, snapshot};
-use serde_json::json;
 
 use crate::common::{GetAllDocumentsOptions, Server};
+use crate::json;
 
 #[actix_rt::test]
 async fn delete_one_document_unexisting_index() {
@@ -154,6 +154,19 @@ async fn delete_document_by_filter() {
         )
         .await;
     index.wait_task(1).await;
+
+    let (stats, _) = index.stats().await;
+    snapshot!(json_string!(stats), @r###"
+    {
+      "numberOfDocuments": 4,
+      "isIndexing": false,
+      "fieldDistribution": {
+        "color": 3,
+        "id": 4
+      }
+    }
+    "###);
+
     let (response, code) =
         index.delete_document_by_filter(json!({ "filter": "color = blue"})).await;
     snapshot!(code, @"202 Accepted");
@@ -188,6 +201,18 @@ async fn delete_document_by_filter() {
     }
     "###);
 
+    let (stats, _) = index.stats().await;
+    snapshot!(json_string!(stats), @r###"
+    {
+      "numberOfDocuments": 2,
+      "isIndexing": false,
+      "fieldDistribution": {
+        "color": 1,
+        "id": 2
+      }
+    }
+    "###);
+
     let (documents, code) = index.get_all_documents(GetAllDocumentsOptions::default()).await;
     snapshot!(code, @"200 OK");
     snapshot!(json_string!(documents), @r###"
@@ -241,6 +266,18 @@ async fn delete_document_by_filter() {
     }
     "###);
 
+    let (stats, _) = index.stats().await;
+    snapshot!(json_string!(stats), @r###"
+    {
+      "numberOfDocuments": 1,
+      "isIndexing": false,
+      "fieldDistribution": {
+        "color": 1,
+        "id": 1
+      }
+    }
+    "###);
+
     let (documents, code) = index.get_all_documents(GetAllDocumentsOptions::default()).await;
     snapshot!(code, @"200 OK");
     snapshot!(json_string!(documents), @r###"
@@ -360,7 +397,7 @@ async fn delete_document_by_complex_filter() {
       "canceledBy": null,
       "details": {
         "providedIds": 0,
-        "deletedDocuments": 4,
+        "deletedDocuments": 2,
         "originalFilter": "[[\"color = green\",\"color NOT EXISTS\"]]"
       },
       "error": null,

meilisearch/tests/documents/errors.rs

@@ -1,8 +1,8 @@
 use meili_snap::*;
-use serde_json::json;
 use urlencoding::encode;
 
 use crate::common::Server;
+use crate::json;
 
 #[actix_rt::test]
 async fn get_all_documents_bad_offset() {

meilisearch/tests/documents/get_documents.rs

@@ -1,11 +1,11 @@
 use actix_web::test;
 use http::header::ACCEPT_ENCODING;
 use meili_snap::*;
-use serde_json::{json, Value};
 use urlencoding::encode as urlencode;
 
 use crate::common::encoder::Encoder;
-use crate::common::{GetAllDocumentsOptions, GetDocumentOptions, Server};
+use crate::common::{GetAllDocumentsOptions, GetDocumentOptions, Server, Value};
+use crate::json;
 
 // TODO: partial test since we are testing error, amd error is not yet fully implemented in
 // transplant
@@ -40,7 +40,7 @@ async fn get_document() {
     let server = Server::new().await;
     let index = server.index("test");
     index.create(None).await;
-    let documents = serde_json::json!([
+    let documents = json!([
         {
             "id": 0,
             "nested": { "content": "foobar" },
@@ -53,7 +53,7 @@ async fn get_document() {
     assert_eq!(code, 200);
     assert_eq!(
         response,
-        serde_json::json!({
+        json!({
             "id": 0,
             "nested": { "content": "foobar" },
         })
@@ -64,7 +64,7 @@ async fn get_document() {
     assert_eq!(code, 200);
     assert_eq!(
         response,
-        serde_json::json!({
+        json!({
             "id": 0,
         })
     );
@@ -75,7 +75,7 @@ async fn get_document() {
     assert_eq!(code, 200);
     assert_eq!(
         response,
-        serde_json::json!({
+        json!({
             "nested": { "content": "foobar" },
         })
     );
@@ -122,7 +122,7 @@ async fn get_all_documents_no_options() {
     assert_eq!(code, 200);
     let arr = response["results"].as_array().unwrap();
     assert_eq!(arr.len(), 20);
-    let first = serde_json::json!({
+    let first = json!({
         "id":0,
         "isActive":false,
         "balance":"$2,668.55",

meilisearch/tests/documents/update_documents.rs

@@ -1,7 +1,8 @@
-use serde_json::json;
+use meili_snap::snapshot;
 
 use crate::common::encoder::Encoder;
 use crate::common::{GetAllDocumentsOptions, Server};
+use crate::json;
 
 #[actix_rt::test]
 async fn error_document_update_create_index_bad_uid() {
@@ -84,7 +85,13 @@ async fn update_document() {
 
     let (response, code) = index.get_document(1, None).await;
     assert_eq!(code, 200);
-    assert_eq!(response.to_string(), r##"{"doc_id":1,"content":"foo","other":"bar"}"##);
+    snapshot!(response, @r###"
+    {
+      "doc_id": 1,
+      "content": "foo",
+      "other": "bar"
+    }
+    "###);
 }
 
 #[actix_rt::test]
@@ -122,7 +129,13 @@ async fn update_document_gzip_encoded() {
 
     let (response, code) = index.get_document(1, None).await;
     assert_eq!(code, 200);
-    assert_eq!(response.to_string(), r##"{"doc_id":1,"content":"foo","other":"bar"}"##);
+    snapshot!(response, @r###"
+    {
+      "doc_id": 1,
+      "content": "foo",
+      "other": "bar"
+    }
+    "###);
 }
 
 #[actix_rt::test]

meilisearch/tests/features/mod.rs

@@ -1,6 +1,8 @@
-use serde_json::json;
+use meilisearch::Opt;
+use tempfile::TempDir;
 
-use crate::common::Server;
+use crate::common::{default_settings, Server};
+use crate::json;
 
 /// Feature name to test against.
 /// This will have to be changed by a different one when that feature is stabilized.
@@ -17,7 +19,9 @@ async fn experimental_features() {
     meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
     {
       "scoreDetails": false,
-      "vectorStore": false
+      "vectorStore": false,
+      "metrics": false,
+      "exportPuffinReports": false
     }
     "###);
 
@@ -27,7 +31,9 @@ async fn experimental_features() {
     meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
     {
       "scoreDetails": false,
-      "vectorStore": true
+      "vectorStore": true,
+      "metrics": false,
+      "exportPuffinReports": false
     }
     "###);
 
@@ -37,7 +43,9 @@ async fn experimental_features() {
     meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
     {
       "scoreDetails": false,
-      "vectorStore": true
+      "vectorStore": true,
+      "metrics": false,
+      "exportPuffinReports": false
     }
     "###);
 
@@ -48,7 +56,9 @@ async fn experimental_features() {
     meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
     {
       "scoreDetails": false,
-      "vectorStore": true
+      "vectorStore": true,
+      "metrics": false,
+      "exportPuffinReports": false
     }
     "###);
 
@@ -59,11 +69,73 @@ async fn experimental_features() {
     meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
     {
       "scoreDetails": false,
-      "vectorStore": true
+      "vectorStore": true,
+      "metrics": false,
+      "exportPuffinReports": false
     }
     "###);
 }
 
+#[actix_rt::test]
+async fn experimental_feature_metrics() {
+    // instance flag for metrics enables metrics at startup
+    let dir = TempDir::new().unwrap();
+    let enable_metrics = Opt { experimental_enable_metrics: true, ..default_settings(dir.path()) };
+    let server = Server::new_with_options(enable_metrics).await.unwrap();
+
+    let (response, code) = server.get_features().await;
+
+    meili_snap::snapshot!(code, @"200 OK");
+    meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
+    {
+      "scoreDetails": false,
+      "vectorStore": false,
+      "metrics": true,
+      "exportPuffinReports": false
+    }
+    "###);
+
+    let (response, code) = server.get_metrics().await;
+    meili_snap::snapshot!(code, @"200 OK");
+
+    // metrics are not returned in json format
+    // so the test server will return null
+    meili_snap::snapshot!(response, @"null");
+
+    // disabling metrics results in invalid request
+    let (response, code) = server.set_features(json!({"metrics": false})).await;
+    meili_snap::snapshot!(code, @"200 OK");
+    meili_snap::snapshot!(response["metrics"], @"false");
+
+    let (response, code) = server.get_metrics().await;
+    meili_snap::snapshot!(code, @"400 Bad Request");
+    meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
+    {
+      "message": "Getting metrics requires enabling the `metrics` experimental feature. See https://github.com/meilisearch/product/discussions/625",
+      "code": "feature_not_enabled",
+      "type": "invalid_request",
+      "link": "https://docs.meilisearch.com/errors#feature_not_enabled"
+    }
+    "###);
+
+    // enabling metrics via HTTP results in valid request
+    let (response, code) = server.set_features(json!({"metrics": true})).await;
+    meili_snap::snapshot!(code, @"200 OK");
+    meili_snap::snapshot!(response["metrics"], @"true");
+
+    let (response, code) = server.get_metrics().await;
+    meili_snap::snapshot!(code, @"200 OK");
+    meili_snap::snapshot!(response, @"null");
+
+    // startup without flag respects persisted metrics value
+    let disable_metrics =
+        Opt { experimental_enable_metrics: false, ..default_settings(dir.path()) };
+    let server_no_flag = Server::new_with_options(disable_metrics).await.unwrap();
+    let (response, code) = server_no_flag.get_metrics().await;
+    meili_snap::snapshot!(code, @"200 OK");
+    meili_snap::snapshot!(response, @"null");
+}
+
 #[actix_rt::test]
 async fn errors() {
     let server = Server::new().await;
@@ -74,7 +146,7 @@ async fn errors() {
     meili_snap::snapshot!(code, @"400 Bad Request");
     meili_snap::snapshot!(meili_snap::json_string!(response), @r###"
     {
-      "message": "Unknown field `NotAFeature`: expected one of `scoreDetails`, `vectorStore`",
+      "message": "Unknown field `NotAFeature`: expected one of `scoreDetails`, `vectorStore`, `metrics`, `exportPuffinReports`",
       "code": "bad_request",
       "type": "invalid_request",
       "link": "https://docs.meilisearch.com/errors#bad_request"

meilisearch/tests/index/create_index.rs

@@ -2,10 +2,10 @@ use actix_web::http::header::ContentType;
 use actix_web::test;
 use http::header::ACCEPT_ENCODING;
 use meili_snap::{json_string, snapshot};
-use serde_json::{json, Value};
 
 use crate::common::encoder::Encoder;
-use crate::common::Server;
+use crate::common::{Server, Value};
+use crate::json;
 
 #[actix_rt::test]
 async fn create_index_no_primary_key() {
@@ -21,7 +21,7 @@ async fn create_index_no_primary_key() {
 
     assert_eq!(response["status"], "succeeded");
     assert_eq!(response["type"], "indexCreation");
-    assert_eq!(response["details"]["primaryKey"], Value::Null);
+    assert_eq!(response["details"]["primaryKey"], json!(null));
 }
 
 #[actix_rt::test]
@@ -38,7 +38,7 @@ async fn create_index_with_gzip_encoded_request() {
 
     assert_eq!(response["status"], "succeeded");
     assert_eq!(response["type"], "indexCreation");
-    assert_eq!(response["details"]["primaryKey"], Value::Null);
+    assert_eq!(response["details"]["primaryKey"], json!(null));
 }
 
 #[actix_rt::test]
@@ -86,7 +86,7 @@ async fn create_index_with_zlib_encoded_request() {
 
     assert_eq!(response["status"], "succeeded");
     assert_eq!(response["type"], "indexCreation");
-    assert_eq!(response["details"]["primaryKey"], Value::Null);
+    assert_eq!(response["details"]["primaryKey"], json!(null));
 }
 
 #[actix_rt::test]
@@ -103,7 +103,7 @@ async fn create_index_with_brotli_encoded_request() {
 
     assert_eq!(response["status"], "succeeded");
     assert_eq!(response["type"], "indexCreation");
-    assert_eq!(response["details"]["primaryKey"], Value::Null);
+    assert_eq!(response["details"]["primaryKey"], json!(null));
 }
 
 #[actix_rt::test]
@@ -136,7 +136,7 @@ async fn create_index_with_invalid_primary_key() {
 
     let (response, code) = index.get().await;
     assert_eq!(code, 200);
-    assert_eq!(response["primaryKey"], Value::Null);
+    assert_eq!(response["primaryKey"], json!(null));
 }
 
 #[actix_rt::test]

meilisearch/tests/index/delete_index.rs

@@ -1,6 +1,5 @@
-use serde_json::json;
-
 use crate::common::Server;
+use crate::json;
 
 #[actix_rt::test]
 async fn create_and_delete_index() {

meilisearch/tests/index/errors.rs

@@ -1,7 +1,7 @@
 use meili_snap::*;
-use serde_json::json;
 
 use crate::common::Server;
+use crate::json;
 
 #[actix_rt::test]
 async fn get_indexes_bad_offset() {

meilisearch/tests/index/stats.rs

@@ -1,6 +1,5 @@
-use serde_json::json;
-
 use crate::common::Server;
+use crate::json;
 
 #[actix_rt::test]
 async fn stats() {

meilisearch/tests/index/update_index.rs

@@ -1,9 +1,9 @@
-use serde_json::json;
 use time::format_description::well_known::Rfc3339;
 use time::OffsetDateTime;
 
 use crate::common::encoder::Encoder;
 use crate::common::Server;
+use crate::json;
 
 #[actix_rt::test]
 async fn update_primary_key() {

meilisearch/tests/search/distinct.rs

@@ -0,0 +1,63 @@
+use meili_snap::snapshot;
+use once_cell::sync::Lazy;
+
+use crate::common::{Server, Value};
+use crate::json;
+
+pub(self) static DOCUMENTS: Lazy<Value> = Lazy::new(|| {
+    json!([
+        {"productId": 1, "shopId": 1},
+        {"productId": 2, "shopId": 1},
+        {"productId": 3, "shopId": 2},
+        {"productId": 4, "shopId": 2},
+        {"productId": 5, "shopId": 3},
+        {"productId": 6, "shopId": 3},
+        {"productId": 7, "shopId": 4},
+        {"productId": 8, "shopId": 4},
+        {"productId": 9, "shopId": 5},
+        {"productId": 10, "shopId": 5}
+    ])
+});
+
+pub(self) static DOCUMENT_PRIMARY_KEY: &str = "productId";
+pub(self) static DOCUMENT_DISTINCT_KEY: &str = "shopId";
+
+/// testing: https://github.com/meilisearch/meilisearch/issues/4078
+#[actix_rt::test]
+async fn distinct_search_with_offset_no_ranking() {
+    let server = Server::new().await;
+    let index = server.index("test");
+
+    let documents = DOCUMENTS.clone();
+    index.add_documents(documents, Some(DOCUMENT_PRIMARY_KEY)).await;
+    index.update_distinct_attribute(json!(DOCUMENT_DISTINCT_KEY)).await;
+    index.wait_task(1).await;
+
+    fn get_hits(Value(response): Value) -> Vec<i64> {
+        let hits_array = response["hits"].as_array().unwrap();
+        hits_array.iter().map(|h| h[DOCUMENT_DISTINCT_KEY].as_i64().unwrap()).collect::<Vec<_>>()
+    }
+
+    let (response, code) = index.search_post(json!({"limit": 2, "offset": 0})).await;
+    let hits = get_hits(response);
+    snapshot!(code, @"200 OK");
+    snapshot!(hits.len(), @"2");
+    snapshot!(format!("{:?}", hits), @"[1, 2]");
+
+    let (response, code) = index.search_post(json!({"limit": 2, "offset": 2})).await;
+    let hits = get_hits(response);
+    snapshot!(code, @"200 OK");
+    snapshot!(hits.len(), @"2");
+    snapshot!(format!("{:?}", hits), @"[3, 4]");
+
+    let (response, code) = index.search_post(json!({"limit": 10, "offset": 4})).await;
+    let hits = get_hits(response);
+    snapshot!(code, @"200 OK");
+    snapshot!(hits.len(), @"1");
+    snapshot!(format!("{:?}", hits), @"[5]");
+
+    let (response, code) = index.search_post(json!({"limit": 10, "offset": 5})).await;
+    let hits = get_hits(response);
+    snapshot!(code, @"200 OK");
+    snapshot!(hits.len(), @"0");
+}

meilisearch/tests/search/errors.rs

@@ -1,8 +1,8 @@
 use meili_snap::*;
-use serde_json::json;
 
 use super::DOCUMENTS;
 use crate::common::Server;
+use crate::json;
 
 #[actix_rt::test]
 async fn search_unexisting_index() {

meilisearch/tests/search/facet_search.rs

@@ -1,8 +1,8 @@
 use meili_snap::snapshot;
 use once_cell::sync::Lazy;
-use serde_json::{json, Value};
 
-use crate::common::Server;
+use crate::common::{Server, Value};
+use crate::json;
 
 pub(self) static DOCUMENTS: Lazy<Value> = Lazy::new(|| {
     json!([

meilisearch/tests/search/formatted.rs

@@ -1,8 +1,8 @@
 use insta::{allow_duplicates, assert_json_snapshot};
-use serde_json::json;
 
 use super::*;
 use crate::common::Server;
+use crate::json;
 
 #[actix_rt::test]
 async fn formatted_contain_wildcard() {

meilisearch/tests/search/geo.rs

@@ -1,7 +1,8 @@
+use meili_snap::{json_string, snapshot};
 use once_cell::sync::Lazy;
-use serde_json::{json, Value};
 
-use crate::common::Server;
+use crate::common::{Server, Value};
+use crate::json;
 
 pub(self) static DOCUMENTS: Lazy<Value> = Lazy::new(|| {
     json!([
@@ -60,3 +61,59 @@ async fn geo_sort_with_geo_strings() {
         )
         .await;
 }
+
+#[actix_rt::test]
+async fn geo_bounding_box_with_string_and_number() {
+    let server = Server::new().await;
+    let index = server.index("test");
+
+    let documents = DOCUMENTS.clone();
+    index.update_settings_filterable_attributes(json!(["_geo"])).await;
+    index.update_settings_sortable_attributes(json!(["_geo"])).await;
+    index.add_documents(documents, None).await;
+    index.wait_task(2).await;
+
+    index
+        .search(
+            json!({
+                "filter": "_geoBoundingBox([89, 179], [-89, -179])",
+            }),
+            |response, code| {
+                assert_eq!(code, 200, "{}", response);
+                snapshot!(json_string!(response, { ".processingTimeMs" => "[time]" }), @r###"
+                {
+                  "hits": [
+                    {
+                      "id": 1,
+                      "name": "Taco Truck",
+                      "address": "444 Salsa Street, Burritoville",
+                      "type": "Mexican",
+                      "rating": 9,
+                      "_geo": {
+                        "lat": 34.0522,
+                        "lng": -118.2437
+                      }
+                    },
+                    {
+                      "id": 2,
+                      "name": "La Bella Italia",
+                      "address": "456 Elm Street, Townsville",
+                      "type": "Italian",
+                      "rating": 9,
+                      "_geo": {
+                        "lat": "45.4777599",
+                        "lng": "9.1967508"
+                      }
+                    }
+                  ],
+                  "query": "",
+                  "processingTimeMs": "[time]",
+                  "limit": 20,
+                  "offset": 0,
+                  "estimatedTotalHits": 2
+                }
+                "###);
+            },
+        )
+        .await;
+}

meilisearch/tests/search/mod.rs

@@ -1,6 +1,7 @@
 // This modules contains all the test concerning search. Each particular feature of the search
 // should be tested in its own module to isolate tests and keep the tests readable.
 
+mod distinct;
 mod errors;
 mod facet_search;
 mod formatted;
@@ -10,9 +11,9 @@ mod pagination;
 mod restrict_searchable;
 
 use once_cell::sync::Lazy;
-use serde_json::{json, Value};
 
-use crate::common::Server;
+use crate::common::{Server, Value};
+use crate::json;
 
 pub(self) static DOCUMENTS: Lazy<Value> = Lazy::new(|| {
     json!([
@@ -816,7 +817,7 @@ async fn experimental_feature_score_details() {
                       },
                       "proximity": {
                         "order": 2,
-                        "score": 0.875
+                        "score": 0.75
                       },
                       "attribute": {
                         "order": 3,
@@ -1104,3 +1105,59 @@ async fn camelcased_words() {
         })
         .await;
 }
+
+#[actix_rt::test]
+async fn simple_search_with_strange_synonyms() {
+    let server = Server::new().await;
+    let index = server.index("test");
+
+    index.update_settings(json!({ "synonyms": {"&": ["to"], "to": ["&"]} })).await;
+    let r = index.wait_task(0).await;
+    meili_snap::snapshot!(r["status"], @r###""succeeded""###);
+
+    let documents = DOCUMENTS.clone();
+    index.add_documents(documents, None).await;
+    index.wait_task(1).await;
+
+    index
+        .search(json!({"q": "How to train"}), |response, code| {
+            meili_snap::snapshot!(code, @"200 OK");
+            meili_snap::snapshot!(meili_snap::json_string!(response["hits"]), @r###"
+            [
+              {
+                "title": "How to Train Your Dragon: The Hidden World",
+                "id": "166428"
+              }
+            ]
+            "###);
+        })
+        .await;
+
+    index
+        .search(json!({"q": "How & train"}), |response, code| {
+            meili_snap::snapshot!(code, @"200 OK");
+            meili_snap::snapshot!(meili_snap::json_string!(response["hits"]), @r###"
+            [
+              {
+                "title": "How to Train Your Dragon: The Hidden World",
+                "id": "166428"
+              }
+            ]
+            "###);
+        })
+        .await;
+
+    index
+        .search(json!({"q": "to"}), |response, code| {
+            meili_snap::snapshot!(code, @"200 OK");
+            meili_snap::snapshot!(meili_snap::json_string!(response["hits"]), @r###"
+            [
+              {
+                "title": "How to Train Your Dragon: The Hidden World",
+                "id": "166428"
+              }
+            ]
+            "###);
+        })
+        .await;
+}

meilisearch/tests/search/multi.rs

@@ -1,8 +1,8 @@
 use meili_snap::{json_string, snapshot};
-use serde_json::json;
 
 use super::{DOCUMENTS, NESTED_DOCUMENTS};
 use crate::common::Server;
+use crate::json;
 
 #[actix_rt::test]
 async fn search_empty_list() {

meilisearch/tests/search/pagination.rs

@@ -1,6 +1,5 @@
-use serde_json::json;
-
 use crate::common::Server;
+use crate::json;
 use crate::search::DOCUMENTS;
 
 #[actix_rt::test]

meilisearch/tests/search/restrict_searchable.rs

@@ -1,9 +1,9 @@
 use meili_snap::{json_string, snapshot};
 use once_cell::sync::Lazy;
-use serde_json::{json, Value};
 
 use crate::common::index::Index;
-use crate::common::Server;
+use crate::common::{Server, Value};
+use crate::json;
 
 async fn index_with_documents<'a>(server: &'a Server, documents: &Value) -> Index<'a> {
     let index = server.index("test");

meilisearch/tests/settings/distinct.rs

@@ -1,6 +1,5 @@
-use serde_json::json;
-
 use crate::common::Server;
+use crate::json;
 
 #[actix_rt::test]
 async fn set_and_reset_distinct_attribute() {

meilisearch/tests/settings/errors.rs

@@ -1,7 +1,7 @@
 use meili_snap::*;
-use serde_json::json;
 
 use crate::common::Server;
+use crate::json;
 
 #[actix_rt::test]
 async fn settings_bad_displayed_attributes() {

meilisearch/tests/settings/get_settings.rs

@@ -1,21 +1,24 @@
 use std::collections::HashMap;
 
 use once_cell::sync::Lazy;
-use serde_json::{json, Value};
 
-use crate::common::Server;
+use crate::common::{Server, Value};
+use crate::json;
 
 static DEFAULT_SETTINGS_VALUES: Lazy<HashMap<&'static str, Value>> = Lazy::new(|| {
     let mut map = HashMap::new();
     map.insert("displayed_attributes", json!(["*"]));
     map.insert("searchable_attributes", json!(["*"]));
     map.insert("filterable_attributes", json!([]));
-    map.insert("distinct_attribute", json!(Value::Null));
+    map.insert("distinct_attribute", json!(null));
     map.insert(
         "ranking_rules",
         json!(["words", "typo", "proximity", "attribute", "sort", "exactness"]),
     );
     map.insert("stop_words", json!([]));
+    map.insert("non_separator_tokens", json!([]));
+    map.insert("separator_tokens", json!([]));
+    map.insert("dictionary", json!([]));
     map.insert("synonyms", json!({}));
     map.insert(
         "faceting",
@@ -51,7 +54,7 @@ async fn get_settings() {
     let (response, code) = index.settings().await;
     assert_eq!(code, 200);
     let settings = response.as_object().unwrap();
-    assert_eq!(settings.keys().len(), 11);
+    assert_eq!(settings.keys().len(), 14);
     assert_eq!(settings["displayedAttributes"], json!(["*"]));
     assert_eq!(settings["searchableAttributes"], json!(["*"]));
     assert_eq!(settings["filterableAttributes"], json!([]));
@@ -62,6 +65,9 @@ async fn get_settings() {
         json!(["words", "typo", "proximity", "attribute", "sort", "exactness"])
     );
     assert_eq!(settings["stopWords"], json!([]));
+    assert_eq!(settings["nonSeparatorTokens"], json!([]));
+    assert_eq!(settings["separatorTokens"], json!([]));
+    assert_eq!(settings["dictionary"], json!([]));
     assert_eq!(
         settings["faceting"],
         json!({
@@ -223,7 +229,7 @@ macro_rules! test_setting_routes {
                         .chars()
                         .map(|c| if c == '_' { '-' } else { c })
                         .collect::<String>());
-                    let (response, code) = server.service.$write_method(url, serde_json::Value::Null).await;
+                    let (response, code) = server.service.$write_method(url, serde_json::Value::Null.into()).await;
                     assert_eq!(code, 202, "{}", response);
                     server.index("").wait_task(0).await;
                     let (response, code) = server.index("test").get().await;
@@ -272,6 +278,9 @@ test_setting_routes!(
     searchable_attributes put,
     distinct_attribute put,
     stop_words put,
+    separator_tokens put,
+    non_separator_tokens put,
+    dictionary put,
     ranking_rules put,
     synonyms put,
     pagination patch,

meilisearch/tests/settings/mod.rs

@@ -1,3 +1,4 @@
 mod distinct;
 mod errors;
 mod get_settings;
+mod tokenizer_customization;

meilisearch/tests/settings/tokenizer_customization.rs

@@ -0,0 +1,467 @@
+use meili_snap::{json_string, snapshot};
+
+use crate::common::Server;
+use crate::json;
+
+#[actix_rt::test]
+async fn set_and_reset() {
+    let server = Server::new().await;
+    let index = server.index("test");
+
+    let (_response, _code) = index
+        .update_settings(json!({
+            "nonSeparatorTokens": ["#", "&"],
+            "separatorTokens": ["&sep", "<br/>"],
+            "dictionary": ["J.R.R.", "J. R. R."],
+        }))
+        .await;
+    index.wait_task(0).await;
+
+    let (response, _) = index.settings().await;
+    snapshot!(json_string!(response["nonSeparatorTokens"]), @r###"
+    [
+      "#",
+      "&"
+    ]
+    "###);
+    snapshot!(json_string!(response["separatorTokens"]), @r###"
+    [
+      "&sep",
+      "<br/>"
+    ]
+    "###);
+    snapshot!(json_string!(response["dictionary"]), @r###"
+    [
+      "J. R. R.",
+      "J.R.R."
+    ]
+    "###);
+
+    index
+        .update_settings(json!({
+            "nonSeparatorTokens": null,
+            "separatorTokens": null,
+            "dictionary": null,
+        }))
+        .await;
+
+    index.wait_task(1).await;
+
+    let (response, _) = index.settings().await;
+    snapshot!(json_string!(response["nonSeparatorTokens"]), @"[]");
+    snapshot!(json_string!(response["separatorTokens"]), @"[]");
+    snapshot!(json_string!(response["dictionary"]), @"[]");
+}
+
+#[actix_rt::test]
+async fn set_and_search() {
+    let documents = json!([
+        {
+            "id": 1,
+            "content": "Mac & cheese",
+        },
+        {
+            "id": 2,
+            "content": "G#D#G#D#G#C#D#G#C#",
+        },
+        {
+            "id": 3,
+            "content": "Mac&sep&&sepcheese",
+        },
+    ]);
+
+    let server = Server::new().await;
+    let index = server.index("test");
+
+    index.add_documents(documents, None).await;
+    index.wait_task(0).await;
+
+    let (_response, _code) = index
+        .update_settings(json!({
+            "nonSeparatorTokens": ["#", "&"],
+            "separatorTokens": ["<br/>", "&sep"],
+            "dictionary": ["#", "A#", "B#", "C#", "D#", "E#", "F#", "G#"],
+        }))
+        .await;
+    index.wait_task(1).await;
+
+    index
+        .search(json!({"q": "&", "attributesToHighlight": ["content"]}), |response, code| {
+            snapshot!(code, @"200 OK");
+            snapshot!(json_string!(response["hits"]), @r###"
+            [
+              {
+                "id": 1,
+                "content": "Mac & cheese",
+                "_formatted": {
+                  "id": "1",
+                  "content": "Mac <em>&</em> cheese"
+                }
+              },
+              {
+                "id": 3,
+                "content": "Mac&sep&&sepcheese",
+                "_formatted": {
+                  "id": "3",
+                  "content": "Mac&sep<em>&</em>&sepcheese"
+                }
+              }
+            ]
+            "###);
+        })
+        .await;
+
+    index
+        .search(
+            json!({"q": "Mac & cheese", "attributesToHighlight": ["content"]}),
+            |response, code| {
+                snapshot!(code, @"200 OK");
+                snapshot!(json_string!(response["hits"]), @r###"
+                [
+                  {
+                    "id": 1,
+                    "content": "Mac & cheese",
+                    "_formatted": {
+                      "id": "1",
+                      "content": "<em>Mac</em> <em>&</em> <em>cheese</em>"
+                    }
+                  },
+                  {
+                    "id": 3,
+                    "content": "Mac&sep&&sepcheese",
+                    "_formatted": {
+                      "id": "3",
+                      "content": "<em>Mac</em>&sep<em>&</em>&sep<em>cheese</em>"
+                    }
+                  }
+                ]
+                "###);
+            },
+        )
+        .await;
+
+    index
+        .search(
+            json!({"q": "Mac&sep&&sepcheese", "attributesToHighlight": ["content"]}),
+            |response, code| {
+                snapshot!(code, @"200 OK");
+                snapshot!(json_string!(response["hits"]), @r###"
+                [
+                  {
+                    "id": 1,
+                    "content": "Mac & cheese",
+                    "_formatted": {
+                      "id": "1",
+                      "content": "<em>Mac</em> <em>&</em> <em>cheese</em>"
+                    }
+                  },
+                  {
+                    "id": 3,
+                    "content": "Mac&sep&&sepcheese",
+                    "_formatted": {
+                      "id": "3",
+                      "content": "<em>Mac</em>&sep<em>&</em>&sep<em>cheese</em>"
+                    }
+                  }
+                ]
+                "###);
+            },
+        )
+        .await;
+
+    index
+        .search(json!({"q": "C#D#G", "attributesToHighlight": ["content"]}), |response, code| {
+            snapshot!(code, @"200 OK");
+            snapshot!(json_string!(response["hits"]), @r###"
+            [
+              {
+                "id": 2,
+                "content": "G#D#G#D#G#C#D#G#C#",
+                "_formatted": {
+                  "id": "2",
+                  "content": "<em>G</em>#<em>D#</em><em>G</em>#<em>D#</em><em>G</em>#<em>C#</em><em>D#</em><em>G</em>#<em>C#</em>"
+                }
+              }
+            ]
+            "###);
+        })
+        .await;
+
+    index
+        .search(json!({"q": "#", "attributesToHighlight": ["content"]}), |response, code| {
+            snapshot!(code, @"200 OK");
+            snapshot!(json_string!(response["hits"]), @"[]");
+        })
+        .await;
+}
+
+#[actix_rt::test]
+async fn advanced_synergies() {
+    let documents = json!([
+        {
+            "id": 1,
+            "content": "J.R.R. Tolkien",
+        },
+        {
+            "id": 2,
+            "content": "J. R. R. Tolkien",
+        },
+        {
+            "id": 3,
+            "content": "jrr Tolkien",
+        },
+        {
+            "id": 4,
+            "content": "J.K. Rowlings",
+        },
+        {
+            "id": 5,
+            "content": "J. K. Rowlings",
+        },
+        {
+            "id": 6,
+            "content": "jk Rowlings",
+        },
+    ]);
+
+    let server = Server::new().await;
+    let index = server.index("test");
+
+    index.add_documents(documents, None).await;
+    index.wait_task(0).await;
+
+    let (_response, _code) = index
+        .update_settings(json!({
+            "dictionary": ["J.R.R.", "J. R. R."],
+            "synonyms": {
+                "J.R.R.": ["jrr", "J. R. R."],
+                "J. R. R.": ["jrr", "J.R.R."],
+                "jrr": ["J.R.R.", "J. R. R."],
+                "J.K.": ["jk", "J. K."],
+                "J. K.": ["jk", "J.K."],
+                "jk": ["J.K.", "J. K."],
+            }
+        }))
+        .await;
+    index.wait_task(1).await;
+
+    index
+        .search(json!({"q": "J.R.R.", "attributesToHighlight": ["content"]}), |response, code| {
+            snapshot!(code, @"200 OK");
+            snapshot!(json_string!(response["hits"]), @r###"
+            [
+              {
+                "id": 1,
+                "content": "J.R.R. Tolkien",
+                "_formatted": {
+                  "id": "1",
+                  "content": "<em>J.R.R.</em> Tolkien"
+                }
+              },
+              {
+                "id": 2,
+                "content": "J. R. R. Tolkien",
+                "_formatted": {
+                  "id": "2",
+                  "content": "<em>J. R. R.</em> Tolkien"
+                }
+              },
+              {
+                "id": 3,
+                "content": "jrr Tolkien",
+                "_formatted": {
+                  "id": "3",
+                  "content": "<em>jrr</em> Tolkien"
+                }
+              }
+            ]
+            "###);
+        })
+        .await;
+
+    index
+        .search(json!({"q": "jrr", "attributesToHighlight": ["content"]}), |response, code| {
+            snapshot!(code, @"200 OK");
+            snapshot!(json_string!(response["hits"]), @r###"
+            [
+              {
+                "id": 3,
+                "content": "jrr Tolkien",
+                "_formatted": {
+                  "id": "3",
+                  "content": "<em>jrr</em> Tolkien"
+                }
+              },
+              {
+                "id": 1,
+                "content": "J.R.R. Tolkien",
+                "_formatted": {
+                  "id": "1",
+                  "content": "<em>J.R.R.</em> Tolkien"
+                }
+              },
+              {
+                "id": 2,
+                "content": "J. R. R. Tolkien",
+                "_formatted": {
+                  "id": "2",
+                  "content": "<em>J. R. R.</em> Tolkien"
+                }
+              }
+            ]
+            "###);
+        })
+        .await;
+
+    index
+        .search(json!({"q": "J. R. R.", "attributesToHighlight": ["content"]}), |response, code| {
+            snapshot!(code, @"200 OK");
+            snapshot!(json_string!(response["hits"]), @r###"
+            [
+              {
+                "id": 2,
+                "content": "J. R. R. Tolkien",
+                "_formatted": {
+                  "id": "2",
+                  "content": "<em>J. R. R.</em> Tolkien"
+                }
+              },
+              {
+                "id": 1,
+                "content": "J.R.R. Tolkien",
+                "_formatted": {
+                  "id": "1",
+                  "content": "<em>J.R.R.</em> Tolkien"
+                }
+              },
+              {
+                "id": 3,
+                "content": "jrr Tolkien",
+                "_formatted": {
+                  "id": "3",
+                  "content": "<em>jrr</em> Tolkien"
+                }
+              }
+            ]
+            "###);
+        })
+        .await;
+
+    // Only update dictionary, the synonyms should be recomputed.
+    let (_response, _code) = index
+        .update_settings(json!({
+            "dictionary": ["J.R.R.", "J. R. R.", "J.K.", "J. K."],
+        }))
+        .await;
+    index.wait_task(2).await;
+
+    index
+        .search(json!({"q": "jk", "attributesToHighlight": ["content"]}), |response, code| {
+            snapshot!(code, @"200 OK");
+            snapshot!(json_string!(response["hits"]), @r###"
+            [
+              {
+                "id": 6,
+                "content": "jk Rowlings",
+                "_formatted": {
+                  "id": "6",
+                  "content": "<em>jk</em> Rowlings"
+                }
+              },
+              {
+                "id": 4,
+                "content": "J.K. Rowlings",
+                "_formatted": {
+                  "id": "4",
+                  "content": "<em>J.K.</em> Rowlings"
+                }
+              },
+              {
+                "id": 5,
+                "content": "J. K. Rowlings",
+                "_formatted": {
+                  "id": "5",
+                  "content": "<em>J. K.</em> Rowlings"
+                }
+              }
+            ]
+            "###);
+        })
+        .await;
+
+    index
+        .search(json!({"q": "J.K.", "attributesToHighlight": ["content"]}), |response, code| {
+            snapshot!(code, @"200 OK");
+            snapshot!(json_string!(response["hits"]), @r###"
+            [
+              {
+                "id": 4,
+                "content": "J.K. Rowlings",
+                "_formatted": {
+                  "id": "4",
+                  "content": "<em>J.K.</em> Rowlings"
+                }
+              },
+              {
+                "id": 5,
+                "content": "J. K. Rowlings",
+                "_formatted": {
+                  "id": "5",
+                  "content": "<em>J. K.</em> Rowlings"
+                }
+              },
+              {
+                "id": 6,
+                "content": "jk Rowlings",
+                "_formatted": {
+                  "id": "6",
+                  "content": "<em>jk</em> Rowlings"
+                }
+              }
+            ]
+            "###);
+        })
+        .await;
+
+    index
+        .search(json!({"q": "J. K.", "attributesToHighlight": ["content"]}), |response, code| {
+            snapshot!(code, @"200 OK");
+            snapshot!(json_string!(response["hits"]), @r###"
+            [
+              {
+                "id": 5,
+                "content": "J. K. Rowlings",
+                "_formatted": {
+                  "id": "5",
+                  "content": "<em>J. K.</em> Rowlings"
+                }
+              },
+              {
+                "id": 4,
+                "content": "J.K. Rowlings",
+                "_formatted": {
+                  "id": "4",
+                  "content": "<em>J.K.</em> Rowlings"
+                }
+              },
+              {
+                "id": 6,
+                "content": "jk Rowlings",
+                "_formatted": {
+                  "id": "6",
+                  "content": "<em>jk</em> Rowlings"
+                }
+              },
+              {
+                "id": 2,
+                "content": "J. R. R. Tolkien",
+                "_formatted": {
+                  "id": "2",
+                  "content": "<em>J. R.</em> R. Tolkien"
+                }
+              }
+            ]
+            "###);
+        })
+        .await;
+}

meilisearch/tests/snapshot/mod.rs

@@ -1,11 +1,13 @@
 use std::time::Duration;
 
 use actix_rt::time::sleep;
+use meili_snap::{json_string, snapshot};
 use meilisearch::option::ScheduleSnapshot;
 use meilisearch::Opt;
 
 use crate::common::server::default_settings;
 use crate::common::{GetAllDocumentsOptions, Server};
+use crate::json;
 
 macro_rules! verify_snapshot {
     (
@@ -44,7 +46,7 @@ async fn perform_snapshot() {
 
     let index = server.index("test");
     index
-        .update_settings(serde_json::json! ({
+        .update_settings(json! ({
         "searchableAttributes": [],
         }))
         .await;
@@ -90,3 +92,95 @@ async fn perform_snapshot() {
         server.index("test1").settings(),
     );
 }
+
+#[actix_rt::test]
+async fn perform_on_demand_snapshot() {
+    let temp = tempfile::tempdir().unwrap();
+    let snapshot_dir = tempfile::tempdir().unwrap();
+
+    let options =
+        Opt { snapshot_dir: snapshot_dir.path().to_owned(), ..default_settings(temp.path()) };
+
+    let server = Server::new_with_options(options).await.unwrap();
+
+    let index = server.index("catto");
+    index
+        .update_settings(json! ({
+        "searchableAttributes": [],
+        }))
+        .await;
+
+    index.load_test_set().await;
+
+    server.index("doggo").create(Some("bone")).await;
+    index.wait_task(2).await;
+
+    server.index("doggo").create(Some("bone")).await;
+    index.wait_task(2).await;
+
+    let (task, code) = server.create_snapshot().await;
+    snapshot!(code, @"202 Accepted");
+    snapshot!(json_string!(task, { ".enqueuedAt" => "[date]" }), @r###"
+    {
+      "taskUid": 4,
+      "indexUid": null,
+      "status": "enqueued",
+      "type": "snapshotCreation",
+      "enqueuedAt": "[date]"
+    }
+    "###);
+    let task = index.wait_task(task.uid()).await;
+    snapshot!(json_string!(task, { ".enqueuedAt" => "[date]", ".startedAt" => "[date]", ".finishedAt" => "[date]", ".duration" => "[duration]" }), @r###"
+    {
+      "uid": 4,
+      "indexUid": null,
+      "status": "succeeded",
+      "type": "snapshotCreation",
+      "canceledBy": null,
+      "error": null,
+      "duration": "[duration]",
+      "enqueuedAt": "[date]",
+      "startedAt": "[date]",
+      "finishedAt": "[date]"
+    }
+    "###);
+
+    let temp = tempfile::tempdir().unwrap();
+
+    let snapshots: Vec<String> = std::fs::read_dir(&snapshot_dir)
+        .unwrap()
+        .map(|entry| entry.unwrap().path().file_name().unwrap().to_str().unwrap().to_string())
+        .collect();
+    meili_snap::snapshot!(format!("{snapshots:?}"), @r###"["db.snapshot"]"###);
+
+    let snapshot_path = snapshot_dir.path().to_owned().join("db.snapshot");
+    #[cfg_attr(windows, allow(unused))]
+    let snapshot_meta = std::fs::metadata(&snapshot_path).unwrap();
+
+    #[cfg(unix)]
+    {
+        use std::os::unix::fs::PermissionsExt;
+        let mode = snapshot_meta.permissions().mode();
+        //                                                    rwxrwxrwx
+        meili_snap::snapshot!(format!("{:b}", mode), @"1000000100100100");
+    }
+
+    let options = Opt { import_snapshot: Some(snapshot_path), ..default_settings(temp.path()) };
+
+    let snapshot_server = Server::new_with_options(options).await.unwrap();
+
+    verify_snapshot!(server, snapshot_server, |server| =>
+        server.list_indexes(None, None),
+        // for some reason the db sizes differ. this may be due to the compaction options we have
+        // set when performing the snapshot
+        //server.stats(),
+
+        // The original instance contains the snapshotCreation task, while the snapshotted-instance does not. For this reason we need to compare the task queue **after** the task 4
+        server.tasks_filter("?from=2"),
+
+        server.index("catto").get_all_documents(GetAllDocumentsOptions::default()),
+        server.index("catto").settings(),
+        server.index("doggo").get_all_documents(GetAllDocumentsOptions::default()),
+        server.index("doggo").settings(),
+    );
+}

meilisearch/tests/stats/mod.rs

@@ -1,8 +1,8 @@
-use serde_json::json;
 use time::format_description::well_known::Rfc3339;
 use time::OffsetDateTime;
 
 use crate::common::Server;
+use crate::json;
 
 #[actix_rt::test]
 async fn get_settings_unexisting_index() {

meilisearch/tests/swap_indexes/errors.rs

@@ -1,7 +1,7 @@
 use meili_snap::*;
-use serde_json::json;
 
 use crate::common::Server;
+use crate::json;
 
 #[actix_rt::test]
 async fn swap_indexes_bad_format() {