Update main.py

main.py

@@ -226,8 +226,8 @@ def fetch_news(query, num_results=20):
     else:
         return []
 
-@cache(expire=3600)
-async def cached_fetch_news(query: str):
+@lru_cache(maxsize=100)
+def cached_fetch_news(query: str):
     return fetch_news(query)