SpringBoot 2.x 整合 redis 做缓存并对每个缓存空间设置过期时间

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/**
 * 缓存配置类
 */
@Configuration
public class RedisConfig extends CachingConfigurerSupport {
    @Bean
    public CacheManager cacheManager(RedisConnectionFactory factory) {
        RedisCacheConfiguration cacheConfiguration =RedisCacheConfiguration.defaultCacheConfig().entryTtl(Duration.ofDays(1))//缓存1天
                        .disableCachingNullValues().computePrefixWith(cacheName -> "miaosha1".concat(":").concat(cacheName).concat(":"))
                        .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new
                                GenericJackson2JsonRedisSerializer()));
        // 设置一个初始化的缓存空间set集合
        Set cacheNames =  new HashSet<>();
        cacheNames.add("my-redis-cache1");
        cacheNames.add("user");

        // 对每个缓存空间应用不同的配置
        Map configMap = new HashMap<>();
        configMap.put("my-redis-cache1", cacheConfiguration);
        configMap.put("user", cacheConfiguration.entryTtl(Duration.ofSeconds(120)));
        RedisCacheManager cacheManager = RedisCacheManager.builder(factory)     // 使用自定义的缓存配置初始化一个cacheManager
                .initialCacheNames(cacheNames)  // 注意这两句的调用顺序，一定要先调用该方法设置初始化的缓存名，再初始化相关的配置
                .withInitialCacheConfigurations(configMap)
                .build();
        return cacheManager;
    }

}