将 Spring 缓存与 Redis 一起使用时，在特定时间设置过期键

问题描述

我正在使用 spring 缓存抽象注释来将缓存应用于我的服务方法.

I am spring caching abstraction annotations to apply caching to my service methods.

由于我使用 Redis 作为缓存存储，我想使用在特定时间使缓存过期的选项，因为 Redis 支持该选项.redis中的expireat命令可以用来设置以后的过期时间.

Since I am using Redis as the cache store, I want to use the option of expiring cache at a specific time, since that is supported by Redis. expireat command in redis can be used to set expire time at a future time.

我不确定如何在使用 RedisCache 时对属于我的缓存的键执行此操作.

I am not sure how I can do that for the keys which are part of my cache when using RedisCache.

我尝试通过创建它的 bean 来自定义 RedisCacheManager.

I tried to customize RedisCacheManager by creating a bean of it.

我看到有一个暴露的 getNativeCache() 方法.但我没有找到任何方法来使用它来设置 expireat 的值.

I see there is a getNativeCache() method exposed. but I did not find any way to set value for expireat using it.

如果有办法自定义 RedisCacheManager 以便特定缓存的所有键使用相同的时间作为到期，请告诉我.

If there is a way to customize RedisCacheManager so that all keys of a specifc cache use the same time as expiry, please let me know.

推荐答案

@Bean (name="cacheManager")
public RedisCacheManager cacheManager(RedisConnectionFactory connectionFactory) {
    RedisCacheConfiguration conf_ready_info = RedisCacheConfiguration.defaultCacheConfig()
            .entryTtl(Duration.ofMillis(50000));

    RedisCacheConfiguration conf_base_info = RedisCacheConfiguration.defaultCacheConfig()
            .entryTtl(Duration.ofMillis(60000));

    Map<String, RedisCacheConfiguration> cacheConfigurations = new HashMap<String, RedisCacheConfiguration>();
    cacheConfigurations.put("base_info", conf_base_info);
    cacheConfigurations.put("ready_info", conf_ready_info);

    return RedisCacheManager.RedisCacheManagerBuilder.fromConnectionFactory(connectionFactory)
            .withInitialCacheConfigurations(cacheConfigurations).build();
}


@Cacheable(value = "ready_info", key = "#aid")
public String  findByAid(String aid) throws Exception {
    String readyInfo = "";
    return readyInfo;
}

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