Spring Boot 3 整合 Spring Cache 与 Redis 缓存实战

javaCopy code@Cacheable(cacheNames = "exampleCache", key = "'exampleKey'")
public String getCachedData() {
    // 执行实际的方法体，结果会被缓存
}

javaCopy code@CacheEvict(cacheNames = "exampleCache", key = "'exampleKey'")
public void clearCache() {
    // 执行实际的方法体，之后清空缓存
}

javaCopy code@CachePut(cacheNames = "exampleCache", key = "'exampleKey'")
public String updateCache() {
    // 执行实际的方法体，结果会被放入缓存
}

javaCopy code@Caching(
    evict = {
        @CacheEvict(cacheNames = "cache1", key = "'key1'"),
        @CacheEvict(cacheNames = "cache2", key = "'key2'")
    }
)
public void clearMultipleCaches() {
    // 执行实际的方法体，清空多个缓存
}

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-cache</artifactId>
</dependency>

spring:
  data:
    redis:
      database: 6
      host: localhost
      port: 6379
      password: 123456
      timeout: 10s
      lettuce:
        pool:
          # 连接池最大连接数 默认8 ，负数表示没有限制
          max-active: 8
          # 连接池最大阻塞等待时间（使用负值表示没有限制） 默认-1
          max-wait: -1
          # 连接池中的最大空闲连接 默认8
          max-idle: 8
          # 连接池中的最小空闲连接 默认0
          min-idle: 0
  cache:
    # 缓存类型 redis、none(不使用缓存)
    type: redis
    # 缓存时间(单位：ms)
    redis:
      time-to-live: 3600000
      # 缓存null值，防止缓存穿透
      cache-null-values: true

package com.youlai.system.config;
import org.springframework.boot.autoconfigure.cache.CacheProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.cache.RedisCacheWriter;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.RedisSerializer;
/**
 * Redis 缓存配置
 *
 * @author haoxr
 * @since 2023/12/4
 */
@EnableCaching
@EnableConfigurationProperties(CacheProperties.class)
@Configuration
public class RedisCacheConfig {
    /**
     * 自定义 RedisCacheManager
     * <p>
     * 修改 Redis 序列化方式，默认 JdkSerializationRedisSerializer
     *
     * @param redisConnectionFactory {@link RedisConnectionFactory}
     * @param cacheProperties        {@link CacheProperties}
     * @return {@link RedisCacheManager}
     */
    @Bean
    public RedisCacheManager redisCacheManager(RedisConnectionFactory redisConnectionFactory, CacheProperties cacheProperties){
        return RedisCacheManager.builder(RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory))
                .cacheDefaults(redisCacheConfiguration(cacheProperties))
                .build();
    }
    /**
     * 自定义 RedisCacheConfiguration
     *
     * @param cacheProperties {@link CacheProperties}
     * @return {@link RedisCacheConfiguration}
     */
    @Bean
    RedisCacheConfiguration redisCacheConfiguration(CacheProperties cacheProperties) {
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();
        config = config.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(RedisSerializer.string()));
        config = config.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(RedisSerializer.json()));
        CacheProperties.Redis redisProperties = cacheProperties.getRedis();
        if (redisProperties.getTimeToLive() != null) {
            config = config.entryTtl(redisProperties.getTimeToLive());
        }
        if (!redisProperties.isCacheNullValues()) {
            config = config.disableCachingNullValues();
        }
        if (!redisProperties.isUseKeyPrefix()) {
            config = config.disableKeyPrefix();
        }
        config = config.computePrefixWith(name -> name + ":");// 覆盖默认key双冒号  CacheKeyPrefix#prefixed
        return config;
    }
}

    /**
     * 获取路由列表
     */
    @Override
    @Cacheable(cacheNames = "menu", key = "'routes'") // cacheNames 为必填项，key 需要使用引号，否则会被识别为变量。
    public List<RouteVO> listRoutes() {
        List<RouteBO> menuList = this.baseMapper.listRoutes();
        return buildRoutes(SystemConstants.ROOT_NODE_ID, menuList);
    }

    /**
     * 新增/修改菜单
     */
    @Override
    @CacheEvict(cacheNames = "menu", key = "'routes'",beforeInvocation = true)
    public boolean saveMenu(MenuForm menuForm) {
        String path = menuForm.getPath();
        MenuTypeEnum menuType = menuForm.getType();
        // 如果是目录
        if (menuType == MenuTypeEnum.CATALOG) {
            if (menuForm.getParentId() == 0 && !path.startsWith("/")) {
                menuForm.setPath("/" + path); // 一级目录需以 / 开头
            }
            menuForm.setComponent("Layout");
        }
        // 如果是外链
        else if (menuType == MenuTypeEnum.EXTLINK) {
            menuForm.setComponent(null);
        }
        SysMenu entity = menuConverter.form2Entity(menuForm);
        String treePath = generateMenuTreePath(menuForm.getParentId());
        entity.setTreePath(treePath);
        return this.saveOrUpdate(entity);
    }

@Cacheable(cacheNames = "menu", key = "'routes'") 

config = config.computePrefixWith(name -> name + ":");//覆盖默认key双冒号  CacheKeyPrefix#prefixed