spring boot redis CacheManager

// 1.0
@Bean
    public CacheManager cacheManager(RedisTemplate redisTemplate) {
        RedisCacheManager redisCacheManager = new RedisCacheManager(redisTemplate);
        // 开启使用缓存名称最为key前缀
        redisCacheManager.setUsePrefix(false);
        //这里可以设置一个默认的过期时间 单位是秒
        redisCacheManager.setDefaultExpiration(cacheExpiration);

        // 设置缓存的过期时间
        redisCacheManager.setExpires(expires);

        return redisCacheManager;
    }

//2.0
 @Bean
    public CacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) {
        //初始化一个RedisCacheWriter
        RedisCacheWriter redisCacheWriter = RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory);
        //设置CacheManager的值序列化方式为json序列化
        RedisSerializer<Object> jsonSerializer = new GenericJackson2JsonRedisSerializer();
        RedisSerializationContext.SerializationPair<Object> pair = RedisSerializationContext.SerializationPair
                .fromSerializer(jsonSerializer);
        RedisCacheConfiguration defaultCacheConfig=RedisCacheConfiguration.defaultCacheConfig()
                .serializeValuesWith(pair);
        //设置默认超过期时间是600秒
        defaultCacheConfig.entryTtl(Duration.ofSeconds(600));
        //初始化RedisCacheManager
        return new RedisCacheManager(redisCacheWriter, defaultCacheConfig);
    }

来自：https://www.cnblogs.com/wjx6270/p/11568202.html