1. 程式人生 > >spring 2.0以上 整合redis和cache後使用@Cacheable 時間失效

spring 2.0以上 整合redis和cache後使用@Cacheable 時間失效

  @Cacheable註解不支援配置過期時間,所有需要通過配置CacheManneg來配置預設的過期時間和針對每個類或者是方法進行快取失效時間配置。

解決
  可以採用如下的配置資訊來解決的設定失效時間問題配置資訊

 @Bean
    public CacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) {
        return new RedisCacheManager(
                RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory),
                this.getRedisCacheConfigurationWithTtl(30*60), // 預設策略,未配置的 key 會使用這個
                this.getRedisCacheConfigurationMap() // 指定 key 策略
        );
    }

    private Map<String, RedisCacheConfiguration> getRedisCacheConfigurationMap() {
        Map<String, RedisCacheConfiguration> redisCacheConfigurationMap = new HashMap<>();
        //SsoCache和BasicDataCache進行過期時間配置
        redisCacheConfigurationMap.put("SsoCache", this.getRedisCacheConfigurationWithTtl(24*60*60));
        redisCacheConfigurationMap.put("BasicDataCache", this.getRedisCacheConfigurationWithTtl(30*60));
        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.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);

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

        return redisCacheConfiguration;
    }

    @Bean
    public KeyGenerator wiselyKeyGenerator() {
        return new KeyGenerator() {
            @Override
            public Object generate(Object target, Method method, Object... params) {
                StringBuilder sb = new StringBuilder();
                sb.append(target.getClass().getName());
                sb.append("." + method.getName());
                if(params==null||params.length==0||params[0]==null){
                    return null;
                }
                String join = String.join("&", Arrays.stream(params).map(Object::toString).collect(Collectors.toList()));
                String format = String.format("%s{%s}", sb.toString(), join);
                //log.info("快取key:" + format);
                return format;
            }
        };
    }



使用方式

@CacheConfig(cacheNames = "SsoCache")
public class SsoCache{
    @Cacheable(keyGenerator = "wiselyKeyGenerator")
    public String getTokenByGsid(String gsid) 
}


//二者選其一,可以使用value上的資訊,來替換類上cacheNames的資訊
 

@Cacheable(value = "BasicDataCache",keyGenerator = "wiselyKeyGenerator")
public String getTokenByGsid(String gsid)