update README.md

workbunny · Aug 6, 2024 · 8d9e55c · 8d9e55c
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@@ -135,6 +135,8 @@
       }
   );
   ```
+  **Tips：Cache::Search()本质上是个扫表匹配的过程，是O(N)的操作，如果需要对特定族群的数据进行监听，推荐使用Channel相关函数实现监听。**
+
 
 - **原子性执行**
   ```php