Spring Caching配置缓存过期时间详解

@EnableCaching

	@Cacheable(value = "DefaultKeyTest", keyGenerator = "simpleKeyGenerator", /*cacheNames = API_DETAIL_KEY_PREFIX, key = "target.redisApiDetailKeyPrefix + ':' + #appCode",*/ unless = "#result == null")
    public OpenApiDetailVo findByAppCode(String appCode) {
        return openApiAuthService.queryDetail(appCode);
    }

@Configuration
public class RedisCacheConfig {

    @Bean
    public KeyGenerator simpleKeyGenerator() {
        return (o, method, objects) -> {
            StringBuilder stringBuilder = new StringBuilder();
            stringBuilder.append(o.getClass().getSimpleName());
            stringBuilder.append(".");
            stringBuilder.append(method.getName());
            stringBuilder.append("[");
            for (Object obj : objects) {
                stringBuilder.append(obj.toString());
            }
            stringBuilder.append("]");

            return stringBuilder.toString();
        };
    }

    @Bean
    public CacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) {
        return new RedisCacheManager(
                RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory),
                this.getRedisCacheConfigurationWithTtl(600), // 默认策略，未配置的 key 会使用这个
                this.getRedisCacheConfigurationMap() // 指定 key 策略
        );
    }

    private Map<String, RedisCacheConfiguration> getRedisCacheConfigurationMap() {
        Map<String, RedisCacheConfiguration> redisCacheConfigurationMap = new HashMap<>();
        redisCacheConfigurationMap.put("UserInfoList", this.getRedisCacheConfigurationWithTtl(3000));
        redisCacheConfigurationMap.put("UserInfoListAnother", this.getRedisCacheConfigurationWithTtl(18000));

        return redisCacheConfigurationMap;
    }

    private RedisCacheConfiguration getRedisCacheConfigurationWithTtl(Integer seconds) {
        Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.activateDefaultTyping(LaissezFaireSubTypeValidator.instance,
                ObjectMapper.DefaultTyping.NON_FINAL,
                JsonTypeInfo.As.WRAPPER_ARRAY);
        jackson2JsonRedisSerializer.setObjectMapper(om);

        RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig();
        redisCacheConfiguration = redisCacheConfiguration.serializeValuesWith(
                RedisSerializationContext
                        .SerializationPair
                        .fromSerializer(jackson2JsonRedisSerializer)
        ).entryTtl(Duration.ofSeconds(seconds));

        return redisCacheConfiguration;
    }
}

	// 3000秒
    @Cacheable(value = "UserInfoList", keyGenerator = "simpleKeyGenerator")
    // 18000秒
    @Cacheable(value = "UserInfoListAnother", keyGenerator = "simpleKeyGenerator")
    // 600秒，未指定的key，使用默认策略
    @Cacheable(value = "DefaultKeyTest", keyGenerator = "simpleKeyGenerator")

spring:
  # maximumSize：配置缓存的最大条数，当快要达到容量上限的时候，缓存管理器会根据一定的策略将部分缓存项移除。
  # expireAfterAccess：配置缓存项的过期机制，缓存项固定30秒将会过期，从而被移除。
  cache:
    caffeine:
      spec: maximumSize=500, expireAfterAccess=30s
    type: caffeine