From 2125db64f8d3fc76ecdc2d93c277dd64702913ac Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Mon, 24 Nov 2025 11:40:15 +0800
Subject: [PATCH] =?UTF-8?q?=E8=8B=8D=E7=A9=B9=E5=A4=96=E5=8D=96--springCac?=
 =?UTF-8?q?he-@Cacheable=E4=BD=BF=E7=94=A8?=
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---
 .../main/java/com/inmind/controller/UserController.java  | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/springcache-demo - inmind/src/main/java/com/inmind/controller/UserController.java b/springcache-demo - inmind/src/main/java/com/inmind/controller/UserController.java
index a2bd541..097ff0a 100644
--- a/springcache-demo - inmind/src/main/java/com/inmind/controller/UserController.java	
+++ b/springcache-demo - inmind/src/main/java/com/inmind/controller/UserController.java	
@@ -5,6 +5,7 @@ import com.inmind.mapper.UserMapper;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.cache.annotation.CachePut;
+import org.springframework.cache.annotation.Cacheable;
 import org.springframework.web.bind.annotation.*;
 
 @RestController
@@ -44,7 +45,15 @@ public class UserController {
         userMapper.deleteAll();
     }
 
+    /*
+    需求：在根据id查询用户时，先从redis缓存中查找,如果没有从数据库中查询，并将查询到的数据放入redis中
+    注意：Cacheable在方法体执行之前就要获取redis的key值，所以不能使用#result
+
+    Cacheable底层原理：代理对象，如果能查询到缓存数据，直接就不调用原始方法，如果查询不到缓存，那就执行原始方法，查询数据，将查询到的数据保存到
+    缓存中
+     */
     @GetMapping
+    @Cacheable(cacheNames = "userCache",key = "#id")//key的生成  userCache::#id
     public User getById(Long id){
         User user = userMapper.getById(id);
         return user;