✨ 缓存模块之 redis 缓存案例完成

demo-cache/demo-cache-api/pom.xml

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <parent>
+    <groupId>com.xkcoding</groupId>
+    <artifactId>demo-cache</artifactId>
+    <version>1.0.0-SNAPSHOT</version>
+  </parent>
+
+  <modelVersion>4.0.0</modelVersion>
+
+  <artifactId>demo-cache-api</artifactId>
+
+  <properties>
+    <java.version>17</java.version>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>org.projectlombok</groupId>
+      <artifactId>lombok</artifactId>
+      <optional>true</optional>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <finalName>demo-cache-api</finalName>
+  </build>
+
+</project>

demo-cache/demo-cache-redis/src/main/java/com/xkcoding/cache/redis/service/impl/UserServiceImpl.java → demo-cache/demo-cache-api/src/main/java/com/xkcoding/cache/api/UserService.java

@@ -1,40 +1,34 @@
-package com.xkcoding.cache.redis.service.impl;
+package com.xkcoding.cache.api;
 
-import com.google.common.collect.Maps;
-import com.xkcoding.cache.redis.entity.User;
-import com.xkcoding.cache.redis.service.UserService;
+import com.xkcoding.cache.entity.User;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.cache.annotation.CacheEvict;
 import org.springframework.cache.annotation.CachePut;
 import org.springframework.cache.annotation.Cacheable;
 import org.springframework.stereotype.Service;
 
+import java.util.HashMap;
 import java.util.Map;
 
 /**
  * <p>
- * UserService
+ * 模拟用户服务
  * </p>
  *
  * @author yangkai.shen
- * @date Created in 2018-11-15 16:45
+ * @date Created in 2022-09-07 14:08
  */
-@Service
 @Slf4j
-public class UserServiceImpl implements UserService {
+@Service
+public class UserService {
     /**
      * 模拟数据库
      */
-    private static final Map<Long, User> DATABASES = Maps.newConcurrentMap();
-
-    /**
-     * 初始化数据
-     */
-    static {
-        DATABASES.put(1L, new User(1L, "user1"));
-        DATABASES.put(2L, new User(2L, "user2"));
-        DATABASES.put(3L, new User(3L, "user3"));
-    }
+    private static final Map<Long, User> DATABASES = new HashMap<>() {{
+        put(1L, new User(1L, "user1"));
+        put(2L, new User(2L, "user2"));
+        put(3L, new User(3L, "user3"));
+    }};
 
     /**
      * 保存或修改用户
@@ -43,7 +37,6 @@ public class UserServiceImpl implements UserService {
      * @return 操作结果
      */
     @CachePut(value = "user", key = "#user.id")
-    @Override
     public User saveOrUpdate(User user) {
         DATABASES.put(user.getId(), user);
         log.info("保存用户【user】= {}", user);
@@ -57,7 +50,6 @@ public class UserServiceImpl implements UserService {
      * @return 返回结果
      */
     @Cacheable(value = "user", key = "#id")
-    @Override
     public User get(Long id) {
         // 我们假设从数据库读取
         log.info("查询用户【id】= {}", id);
@@ -70,7 +62,6 @@ public class UserServiceImpl implements UserService {
      * @param id key值
      */
     @CacheEvict(value = "user", key = "#id")
-    @Override
     public void delete(Long id) {
         DATABASES.remove(id);
         log.info("删除用户【id】= {}", id);

demo-cache/demo-cache-api/src/main/java/com/xkcoding/cache/autoconfigure/CacheMockServiceAutoConfiguration.java

@@ -0,0 +1,21 @@
+package com.xkcoding.cache.autoconfigure;
+
+import com.xkcoding.cache.api.UserService;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * <p>
+ * 缓存 mock 自动装配
+ * </p>
+ *
+ * @author yangkai.shen
+ * @date 2022-09-07 14:31
+ */
+@Configuration(proxyBeanMethods = false)
+public class CacheMockServiceAutoConfiguration {
+    @Bean
+    public UserService userService() {
+        return new UserService();
+    }
+}

demo-cache/demo-cache-redis/src/main/java/com/xkcoding/cache/redis/entity/User.java → demo-cache/demo-cache-api/src/main/java/com/xkcoding/cache/entity/User.java

@@ -1,23 +1,25 @@
-package com.xkcoding.cache.redis.entity;
+package com.xkcoding.cache.entity;
 
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
+import java.io.Serial;
 import java.io.Serializable;
 
 /**
  * <p>
- * 用户实体
+ * 用户对象
  * </p>
  *
  * @author yangkai.shen
- * @date Created in 2018-11-15 16:39
+ * @date Created in 2022-09-07 13:54
  */
 @Data
 @AllArgsConstructor
 @NoArgsConstructor
 public class User implements Serializable {
+    @Serial
     private static final long serialVersionUID = 2892248514883451461L;
     /**
      * 主键id

demo-cache/demo-cache-api/src/main/resources/META-INF/spring.factories

@@ -0,0 +1,2 @@
+org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
+  com.xkcoding.cache.autoconfigure.CacheMockServiceAutoConfiguration

demo-cache/demo-cache-redis/.gitignore

@@ -1,25 +0,0 @@
-/target/
-!.mvn/wrapper/maven-wrapper.jar
-
-### STS ###
-.apt_generated
-.classpath
-.factorypath
-.project
-.settings
-.springBeans
-.sts4-cache
-
-### IntelliJ IDEA ###
-.idea
-*.iws
-*.iml
-*.ipr
-
-### NetBeans ###
-/nbproject/private/
-/build/
-/nbbuild/
-/dist/
-/nbdist/
-/.nb-gradle/

demo-cache/demo-cache-redis/README.md

@@ -1,94 +1,56 @@
-# spring-boot-demo-cache-redis
+## spring-boot-demo-cache-redis
 
 > 此 demo 主要演示了 Spring Boot 如何整合 redis，操作redis中的数据，并使用redis缓存数据。连接池使用  Lettuce。
 
-## pom.xml
+### 1.开发步骤
 
-```xml
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <modelVersion>4.0.0</modelVersion>
+#### 1.1.添加依赖
 
-    <artifactId>spring-boot-demo-cache-redis</artifactId>
+```xml
+<dependencies>
+  <dependency>
+    <groupId>com.xkcoding</groupId>
+    <artifactId>common-tools</artifactId>
+  </dependency>
+
+  <dependency>
+    <groupId>com.xkcoding</groupId>
+    <artifactId>demo-cache-api</artifactId>
     <version>1.0.0-SNAPSHOT</version>
-    <packaging>jar</packaging>
-
-    <name>spring-boot-demo-cache-redis</name>
-    <description>Demo project for Spring Boot</description>
-
-    <parent>
-        <groupId>com.xkcoding</groupId>
-        <artifactId>spring-boot-demo</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
-    </parent>
-
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <java.version>1.8</java.version>
-    </properties>
-
-    <dependencies>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-data-redis</artifactId>
-        </dependency>
-
-        <!-- 对象池，使用redis时必须引入 -->
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-pool2</artifactId>
-        </dependency>
-
-        <!-- 引入 jackson 对象json转换 -->
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-json</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-test</artifactId>
-            <scope>test</scope>
-        </dependency>
-
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>cn.hutool</groupId>
-            <artifactId>hutool-all</artifactId>
-        </dependency>
-
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <optional>true</optional>
-        </dependency>
-    </dependencies>
-
-    <build>
-        <finalName>spring-boot-demo-cache-redis</finalName>
-        <plugins>
-            <plugin>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-maven-plugin</artifactId>
-            </plugin>
-        </plugins>
-    </build>
-
-</project>
+  </dependency>
+
+  <dependency>
+    <groupId>org.springframework.boot</groupId>
+    <artifactId>spring-boot-starter-web</artifactId>
+  </dependency>
+
+  <dependency>
+    <groupId>org.springframework.boot</groupId>
+    <artifactId>spring-boot-starter-data-redis</artifactId>
+  </dependency>
+
+  <!-- 对象池，如果存在该依赖会自动注入 -->
+  <!-- https://docs.spring.io/spring-boot/docs/3.0.0-M4/reference/htmlsingle/#data.nosql.redis.connecting -->
+  <dependency>
+    <groupId>org.apache.commons</groupId>
+    <artifactId>commons-pool2</artifactId>
+  </dependency>
+
+  <dependency>
+    <groupId>org.springframework.boot</groupId>
+    <artifactId>spring-boot-starter-test</artifactId>
+    <scope>test</scope>
+  </dependency>
+
+  <dependency>
+    <groupId>org.projectlombok</groupId>
+    <artifactId>lombok</artifactId>
+    <optional>true</optional>
+  </dependency>
+</dependencies>
 ```
 
-## application.yml
+#### 1.2.配置文件
 
 ```yaml
 spring:
@@ -116,21 +78,13 @@ logging:
     com.xkcoding: debug
 ```
 
-## RedisConfig.java
+#### 1.3.自动装配Redis缓存管理
 
 ```java
-/**
- * <p>
- * redis配置
- * </p>
- *
- * @author yangkai.shen
- * @date Created in 2018-11-15 16:41
- */
+@EnableCaching
 @Configuration
 @AutoConfigureAfter(RedisAutoConfiguration.class)
-@EnableCaching
-public class RedisConfig {
+public class RedisCacheAutoConfiguration {
 
     /**
      * 默认情况下的模板只能支持RedisTemplate<String, String>，也就是只能存入字符串，因此支持序列化
@@ -151,40 +105,31 @@ public class RedisConfig {
     public CacheManager cacheManager(RedisConnectionFactory factory) {
         // 配置序列化
         RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();
-        RedisCacheConfiguration redisCacheConfiguration = config.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer())).serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));
+        RedisCacheConfiguration redisCacheConfiguration =
+            config.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()))
+                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));
 
         return RedisCacheManager.builder(factory).cacheDefaults(redisCacheConfiguration).build();
     }
 }
 ```
 
-## UserServiceImpl.java
+#### 1.4.缓存通过注解实现
+
+> 为了减少重复代码，该部分我将其抽取实现在 demo-cache-api 模块中
 
 ```java
-/**
- * <p>
- * UserService
- * </p>
- *
- * @author yangkai.shen
- * @date Created in 2018-11-15 16:45
- */
-@Service
 @Slf4j
-public class UserServiceImpl implements UserService {
+@Service
+public class UserService {
     /**
      * 模拟数据库
      */
-    private static final Map<Long, User> DATABASES = Maps.newConcurrentMap();
-
-    /**
-     * 初始化数据
-     */
-    static {
-        DATABASES.put(1L, new User(1L, "user1"));
-        DATABASES.put(2L, new User(2L, "user2"));
-        DATABASES.put(3L, new User(3L, "user3"));
-    }
+    private static final Map<Long, User> DATABASES = new HashMap<>() {{
+        put(1L, new User(1L, "user1"));
+        put(2L, new User(2L, "user2"));
+        put(3L, new User(3L, "user3"));
+    }};
 
     /**
      * 保存或修改用户
@@ -193,7 +138,6 @@ public class UserServiceImpl implements UserService {
      * @return 操作结果
      */
     @CachePut(value = "user", key = "#user.id")
-    @Override
     public User saveOrUpdate(User user) {
         DATABASES.put(user.getId(), user);
         log.info("保存用户【user】= {}", user);
@@ -207,7 +151,6 @@ public class UserServiceImpl implements UserService {
      * @return 返回结果
      */
     @Cacheable(value = "user", key = "#id")
-    @Override
     public User get(Long id) {
         // 我们假设从数据库读取
         log.info("查询用户【id】= {}", id);
@@ -220,7 +163,6 @@ public class UserServiceImpl implements UserService {
      * @param id key值
      */
     @CacheEvict(value = "user", key = "#id")
-    @Override
     public void delete(Long id) {
         DATABASES.remove(id);
         log.info("删除用户【id】= {}", id);
@@ -228,9 +170,20 @@ public class UserServiceImpl implements UserService {
 }
 ```
 
-## RedisTest.java
+### 2.测试
+
+#### 2.1.环境搭建
 
-> 主要测试使用 `RedisTemplate` 操作 `Redis` 中的数据：
+主要是 redis 环境的搭建，这里我提供了 docker-compose 文件，方便同学们一键启动测试环境
+
+```bash
+$ cd demo-cache/demo-cache-redis
+$ docker compose -f docker-compose.env.yml up
+```
+
+#### 2.2.测试 Redis 基础功能
+
+> 主要测试使用 `RedisTemplate` 操作 `Redis` 中的数据，查看是否正常序列化：
 >
 > - opsForValue：对应 String（字符串）
 > - opsForZSet：对应 ZSet（有序集合）
@@ -240,16 +193,9 @@ public class UserServiceImpl implements UserService {
 > - opsForGeo：** 对应 GEO（地理位置）
 
 ```java
-/**
- * <p>
- * Redis测试
- * </p>
- *
- * @author yangkai.shen
- * @date Created in 2018-11-15 17:17
- */
 @Slf4j
-public class RedisTest extends SpringBootDemoCacheRedisApplicationTests {
+@SpringBootTest
+public class RedisTest {
 
     @Autowired
     private StringRedisTemplate stringRedisTemplate;
@@ -261,13 +207,19 @@ public class RedisTest extends SpringBootDemoCacheRedisApplicationTests {
      * 测试 Redis 操作
      */
     @Test
-    public void get() {
+    public void get() throws InterruptedException {
         // 测试线程安全，程序结束查看redis中count的值是否为1000
         ExecutorService executorService = Executors.newFixedThreadPool(1000);
-        IntStream.range(0, 1000).forEach(i -> executorService.execute(() -> stringRedisTemplate.opsForValue().increment("count", 1)));
+        CountDownLatch wait = new CountDownLatch(1000);
+        IntStream.range(0, 1000).forEach(i -> executorService.execute(() -> {
+            stringRedisTemplate.opsForValue().increment("count", 1);
+            wait.countDown();
+        }));
+        wait.await();
+        log.debug("【count】= {}", stringRedisTemplate.opsForValue().getAndExpire("count", Duration.ofSeconds(10)));
 
         stringRedisTemplate.opsForValue().set("k1", "v1");
-        String k1 = stringRedisTemplate.opsForValue().get("k1");
+        String k1 = stringRedisTemplate.opsForValue().getAndExpire("k1", Duration.ofSeconds(10));
         log.debug("【k1】= {}", k1);
 
         // 以下演示整合，具体Redis命令可以参考官方文档
@@ -275,27 +227,19 @@ public class RedisTest extends SpringBootDemoCacheRedisApplicationTests {
         redisCacheTemplate.opsForValue().set(key, new User(1L, "user1"));
         // 对应 String（字符串）
         User user = (User) redisCacheTemplate.opsForValue().get(key);
+        String userSerialized = stringRedisTemplate.opsForValue().getAndExpire(key, Duration.ofSeconds(10));
         log.debug("【user】= {}", user);
+        log.debug("【userSerialized】= {}", userSerialized);
     }
 }
-
 ```
 
-## UserServiceTest.java
-
-> 主要测试使用Redis缓存是否起效
+#### 2.3.测试Redis缓存是否生效
 
 ```java
-/**
- * <p>
- * Redis - 缓存测试
- * </p>
- *
- * @author yangkai.shen
- * @date Created in 2018-11-15 16:53
- */
 @Slf4j
-public class UserServiceTest extends SpringBootDemoCacheRedisApplicationTests {
+@SpringBootTest
+public class UserServiceTest {
     @Autowired
     private UserService userService;
 
@@ -340,8 +284,9 @@ public class UserServiceTest extends SpringBootDemoCacheRedisApplicationTests {
 }
 ```
 
-## 参考
+### 3.参考
 
-- spring-data-redis 官方文档：https://docs.spring.io/spring-data/redis/docs/2.0.1.RELEASE/reference/html/
-- redis 文档：https://redis.io/documentation
-- redis 中文文档：http://www.redis.cn/commands.html
+- [Spring Boot 官方文档之连接 Redis](https://docs.spring.io/spring-boot/docs/3.0.0-M4/reference/htmlsingle/#data.nosql.redis)
+- [Spring Boot 官方文档之 Redis 缓存](https://docs.spring.io/spring-boot/docs/3.0.0-M4/reference/htmlsingle/#io.caching.provider.redis)
+- [spring-data-redis 官方文档](https://docs.spring.io/spring-data/redis/docs/3.0.0-M5/reference/html/)
+- [Redis 官方文档](https://redis.io/docs/)

demo-cache/demo-cache-redis/docker-compose.env.yml

@@ -0,0 +1,7 @@
+version: "3.8"
+
+services:
+  redis:
+    image: redis:7.0.4-alpine
+    ports:
+      - "6379:6379"

demo-cache/demo-cache-redis/pom.xml

@@ -1,81 +1,75 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <modelVersion>4.0.0</modelVersion>
-
-    <artifactId>demo-cache-redis</artifactId>
+  <parent>
+    <groupId>com.xkcoding</groupId>
+    <artifactId>demo-cache</artifactId>
     <version>1.0.0-SNAPSHOT</version>
-    <packaging>jar</packaging>
+  </parent>
 
-    <name>demo-cache-redis</name>
-    <description>Demo project for Spring Boot</description>
+  <modelVersion>4.0.0</modelVersion>
 
-    <parent>
-        <groupId>com.xkcoding</groupId>
-        <artifactId>spring-boot-demo</artifactId>
-        <version>1.0.0-SNAPSHOT</version>
-    </parent>
+  <artifactId>demo-cache-redis</artifactId>
+  <version>1.0.0-SNAPSHOT</version>
+  <packaging>jar</packaging>
 
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <java.version>1.8</java.version>
-    </properties>
+  <name>demo-cache-redis</name>
+  <description>Demo project for Spring Boot</description>
 
-    <dependencies>
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter</artifactId>
-        </dependency>
+  <properties>
+    <java.version>17</java.version>
+  </properties>
 
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-data-redis</artifactId>
-        </dependency>
+  <dependencies>
+    <dependency>
+      <groupId>com.xkcoding</groupId>
+      <artifactId>common-tools</artifactId>
+    </dependency>
 
-        <!-- 对象池，使用redis时必须引入 -->
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-pool2</artifactId>
-        </dependency>
+    <dependency>
+      <groupId>com.xkcoding</groupId>
+      <artifactId>demo-cache-api</artifactId>
+      <version>1.0.0-SNAPSHOT</version>
+    </dependency>
 
-        <!-- 引入 jackson 对象json转换 -->
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-json</artifactId>
-        </dependency>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-web</artifactId>
+    </dependency>
 
-        <dependency>
-            <groupId>org.springframework.boot</groupId>
-            <artifactId>spring-boot-starter-test</artifactId>
-            <scope>test</scope>
-        </dependency>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-data-redis</artifactId>
+    </dependency>
 
-        <dependency>
-            <groupId>com.google.guava</groupId>
-            <artifactId>guava</artifactId>
-        </dependency>
+    <!-- 对象池，如果存在该依赖会自动注入 -->
+    <!-- https://docs.spring.io/spring-boot/docs/3.0.0-M4/reference/htmlsingle/#data.nosql.redis.connecting -->
+    <dependency>
+      <groupId>org.apache.commons</groupId>
+      <artifactId>commons-pool2</artifactId>
+    </dependency>
 
-        <dependency>
-            <groupId>cn.hutool</groupId>
-            <artifactId>hutool-all</artifactId>
-        </dependency>
+    <dependency>
+      <groupId>org.springframework.boot</groupId>
+      <artifactId>spring-boot-starter-test</artifactId>
+      <scope>test</scope>
+    </dependency>
 
-        <dependency>
-            <groupId>org.projectlombok</groupId>
-            <artifactId>lombok</artifactId>
-            <optional>true</optional>
-        </dependency>
-    </dependencies>
+    <dependency>
+      <groupId>org.projectlombok</groupId>
+      <artifactId>lombok</artifactId>
+      <optional>true</optional>
+    </dependency>
+  </dependencies>
 
-    <build>
-        <finalName>demo-cache-redis</finalName>
-        <plugins>
-            <plugin>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-maven-plugin</artifactId>
-            </plugin>
-        </plugins>
-    </build>
+  <build>
+    <finalName>demo-cache-redis</finalName>
+    <plugins>
+      <plugin>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-maven-plugin</artifactId>
+      </plugin>
+    </plugins>
+  </build>
 
 </project>

demo-cache/demo-cache-redis/src/main/java/com/xkcoding/cache/redis/SpringBootDemoCacheRedisApplication.java → demo-cache/demo-cache-redis/src/main/java/com/xkcoding/cache/redis/RedisCacheApplication.java

@@ -3,10 +3,18 @@ package com.xkcoding.cache.redis;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
+/**
+ * <p>
+ * 启动器
+ * </p>
+ *
+ * @author yangkai.shen
+ * @date Created in 2022-09-06 23:09
+ */
 @SpringBootApplication
-public class SpringBootDemoCacheRedisApplication {
+public class RedisCacheApplication {
 
     public static void main(String[] args) {
-        SpringApplication.run(SpringBootDemoCacheRedisApplication.class, args);
+        SpringApplication.run(RedisCacheApplication.class, args);
     }
 }

demo-cache/demo-cache-redis/src/main/java/com/xkcoding/cache/redis/config/RedisConfig.java → demo-cache/demo-cache-redis/src/main/java/com/xkcoding/cache/redis/configuration/RedisCacheAutoConfiguration.java

@@ -1,4 +1,4 @@
-package com.xkcoding.cache.redis.config;
+package com.xkcoding.cache.redis.configuration;
 
 import org.springframework.boot.autoconfigure.AutoConfigureAfter;
 import org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration;
@@ -19,16 +19,16 @@ import java.io.Serializable;
 
 /**
  * <p>
- * redis配置
+ * redis 缓存自动装配，同时设置 redis 序列化
  * </p>
  *
  * @author yangkai.shen
- * @date Created in 2018-11-15 16:41
+ * @date Created in 2022-09-07 14:03
  */
+@EnableCaching
 @Configuration
 @AutoConfigureAfter(RedisAutoConfiguration.class)
-@EnableCaching
-public class RedisConfig {
+public class RedisCacheAutoConfiguration {
 
     /**
      * 默认情况下的模板只能支持RedisTemplate<String, String>，也就是只能存入字符串，因此支持序列化
@@ -49,7 +49,9 @@ public class RedisConfig {
     public CacheManager cacheManager(RedisConnectionFactory factory) {
         // 配置序列化
         RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();
-        RedisCacheConfiguration redisCacheConfiguration = config.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer())).serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));
+        RedisCacheConfiguration redisCacheConfiguration =
+            config.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()))
+                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));
 
         return RedisCacheManager.builder(factory).cacheDefaults(redisCacheConfiguration).build();
     }

demo-cache/demo-cache-redis/src/main/java/com/xkcoding/cache/redis/service/UserService.java

@@ -1,36 +0,0 @@
-package com.xkcoding.cache.redis.service;
-
-import com.xkcoding.cache.redis.entity.User;
-
-/**
- * <p>
- * UserService
- * </p>
- *
- * @author yangkai.shen
- * @date Created in 2018-11-15 16:45
- */
-public interface UserService {
-    /**
-     * 保存或修改用户
-     *
-     * @param user 用户对象
-     * @return 操作结果
-     */
-    User saveOrUpdate(User user);
-
-    /**
-     * 获取用户
-     *
-     * @param id key值
-     * @return 返回结果
-     */
-    User get(Long id);
-
-    /**
-     * 删除
-     *
-     * @param id key值
-     */
-    void delete(Long id);
-}

demo-cache/demo-cache-redis/src/test/java/com/xkcoding/cache/redis/RedisCacheApplicationTests.java

@@ -0,0 +1,13 @@
+package com.xkcoding.cache.redis;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class RedisCacheApplicationTests {
+
+    @Test
+    void contextLoads() {
+    }
+
+}

demo-cache/demo-cache-redis/src/test/java/com/xkcoding/cache/redis/RedisTest.java

@@ -1,27 +1,31 @@
 package com.xkcoding.cache.redis;
 
-import com.xkcoding.cache.redis.entity.User;
+import com.xkcoding.cache.entity.User;
 import lombok.extern.slf4j.Slf4j;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.data.redis.core.RedisTemplate;
 import org.springframework.data.redis.core.StringRedisTemplate;
 
 import java.io.Serializable;
+import java.time.Duration;
+import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.stream.IntStream;
 
 /**
  * <p>
- * Redis测试
+ * redis 基础用法
  * </p>
  *
  * @author yangkai.shen
- * @date Created in 2018-11-15 17:17
+ * @date Created in 2022-09-07 13:48
  */
 @Slf4j
-public class RedisTest extends SpringBootDemoCacheRedisApplicationTests {
+@SpringBootTest
+public class RedisTest {
 
     @Autowired
     private StringRedisTemplate stringRedisTemplate;
@@ -33,13 +37,19 @@ public class RedisTest extends SpringBootDemoCacheRedisApplicationTests {
      * 测试 Redis 操作
      */
     @Test
-    public void get() {
+    public void get() throws InterruptedException {
         // 测试线程安全，程序结束查看redis中count的值是否为1000
         ExecutorService executorService = Executors.newFixedThreadPool(1000);
-        IntStream.range(0, 1000).forEach(i -> executorService.execute(() -> stringRedisTemplate.opsForValue().increment("count", 1)));
+        CountDownLatch wait = new CountDownLatch(1000);
+        IntStream.range(0, 1000).forEach(i -> executorService.execute(() -> {
+            stringRedisTemplate.opsForValue().increment("count", 1);
+            wait.countDown();
+        }));
+        wait.await();
+        log.debug("【count】= {}", stringRedisTemplate.opsForValue().getAndExpire("count", Duration.ofSeconds(10)));
 
         stringRedisTemplate.opsForValue().set("k1", "v1");
-        String k1 = stringRedisTemplate.opsForValue().get("k1");
+        String k1 = stringRedisTemplate.opsForValue().getAndExpire("k1", Duration.ofSeconds(10));
         log.debug("【k1】= {}", k1);
 
         // 以下演示整合，具体Redis命令可以参考官方文档
@@ -47,6 +57,8 @@ public class RedisTest extends SpringBootDemoCacheRedisApplicationTests {
         redisCacheTemplate.opsForValue().set(key, new User(1L, "user1"));
         // 对应 String（字符串）
         User user = (User) redisCacheTemplate.opsForValue().get(key);
+        String userSerialized = stringRedisTemplate.opsForValue().getAndExpire(key, Duration.ofSeconds(10));
         log.debug("【user】= {}", user);
+        log.debug("【userSerialized】= {}", userSerialized);
     }
 }

demo-cache/demo-cache-redis/src/test/java/com/xkcoding/cache/redis/SpringBootDemoCacheRedisApplicationTests.java

@@ -1,16 +0,0 @@
-package com.xkcoding.cache.redis;
-
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.test.context.junit4.SpringRunner;
-
-@RunWith(SpringRunner.class)
-@SpringBootTest
-public class SpringBootDemoCacheRedisApplicationTests {
-
-    @Test
-    public void contextLoads() {
-    }
-
-}

demo-cache/demo-cache-redis/src/test/java/com/xkcoding/cache/redis/service/UserServiceTest.java

@@ -1,10 +1,11 @@
 package com.xkcoding.cache.redis.service;
 
-import com.xkcoding.cache.redis.SpringBootDemoCacheRedisApplicationTests;
-import com.xkcoding.cache.redis.entity.User;
+import com.xkcoding.cache.api.UserService;
+import com.xkcoding.cache.entity.User;
 import lombok.extern.slf4j.Slf4j;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
 
 /**
  * <p>
@@ -12,10 +13,11 @@ import org.springframework.beans.factory.annotation.Autowired;
  * </p>
  *
  * @author yangkai.shen
- * @date Created in 2018-11-15 16:53
+ * @date Created in 2022-09-07 14:37
  */
 @Slf4j
-public class UserServiceTest extends SpringBootDemoCacheRedisApplicationTests {
+@SpringBootTest
+public class UserServiceTest {
     @Autowired
     private UserService userService;
 

demo-cache/pom.xml

@@ -18,4 +18,9 @@
     <java.version>17</java.version>
   </properties>
 
+  <modules>
+    <module>demo-cache-api</module>
+    <module>demo-cache-redis</module>
+  </modules>
+
 </project>