SpringCache自我学习

cacheable 把查询出来的数据放到缓存
cacheevict 更新 – >删除模式
cacheput 更新 --> 双写模式

Cacheable() ->value是分区名 key是缓存名

配置类

@Configuration
@EnableCaching  //开启缓存
@EnableConfigurationProperties(CacheProperties.class)  //使用redis的容器里面的配置
public class MyCacheConfig {
    
    

   /* @Autowired
    private CacheProperties cacheProperties;*/

    @Bean
    public RedisCacheConfiguration redisCacheConfiguration(CacheProperties cacheProperties) {
    
    
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();
        config = config.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()));
        config = config.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));

        CacheProperties.Redis redisProperties = cacheProperties.getRedis();
        if (redisProperties.getTimeToLive() != null) {
    
    
            config = config.entryTtl(redisProperties.getTimeToLive());
        }
        if (redisProperties.getKeyPrefix() != null) {
    
    
            config = config.prefixKeysWith(redisProperties.getKeyPrefix());
        }
        if (!redisProperties.isCacheNullValues()) {
    
    
            config = config.disableCachingNullValues();
        }
        if (!redisProperties.isUseKeyPrefix()) {
    
    
            config = config.disableKeyPrefix();
        }
        return config;
    }
}

主配置文件里面的一些基本规则

缺点

不能保证强一致性 加的锁不是分布式锁