实现缓存装饰器，优化数据获取和存储逻辑

nonebot_plugin_marshoai/decos.py

@@ -2,14 +2,36 @@ from .instances import cache
 
 
 def from_cache(key):
+    """
+    当缓存中有数据时，直接返回缓存中的数据，否则执行函数并将结果存入缓存
+    """
+
     def decorator(func):
-        def wrapper(*args, **kwargs):
+        async def wrapper(*args, **kwargs):
             cached = cache.get(key)
             if cached:
                 return cached
             else:
-                result = func(*args, **kwargs)
+                result = await func(*args, **kwargs)
                 cache.set(key, result)
                 return result
 
         return wrapper
+
+    return decorator
+
+
+def update_to_cache(key):
+    """
+    执行函数并将结果存入缓存
+    """
+
+    def decorator(func):
+        async def wrapper(*args, **kwargs):
+            result = await func(*args, **kwargs)
+            cache.set(key, result)
+            return result
+
+        return wrapper
+
+    return decorator