Redisl乱码和过期时间配置

最新推荐文章于 2022-06-28 16:41:55 发布

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最新推荐文章于 2022-06-28 16:41:55 发布

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文章标签： redis 缓存 java

本文链接：https://blog.youkuaiyun.com/qq_48403611/article/details/122878121

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该博客详细介绍了如何使用Redis配置三种不同的缓存过期策略：1分钟、1小时和1天。通过`RedisCacheManager`的构建方法，设置`Jackson2JsonRedisSerializer`来处理序列化，并调整序列化配置以优化存储。此外，还展示了如何通过`RedisCacheConfiguration`实例化不同过期时间的缓存配置。

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 /**
     * 1分钟过期
     * @param connectionFactory
     * @return
     */
    @Bean
    public RedisCacheManager cacheManager1Minute(RedisConnectionFactory connectionFactory) {
        RedisCacheConfiguration config = instanceConfig(60L);
        return RedisCacheManager.builder(connectionFactory)
                .cacheDefaults(config)
                .transactionAware()
                .build();
    }


    /**
     * 默认是1小时
     * @param connectionFactory
     * @return
     */
    @Bean
    @Primary
    public RedisCacheManager cacheManager1Hour(RedisConnectionFactory connectionFactory) {
        RedisCacheConfiguration config = instanceConfig(3600L);
        return RedisCacheManager.builder(connectionFactory)
                .cacheDefaults(config)
                .transactionAware()
                .build();
    }

    /**
     * 1天过期
     * @param connectionFactory
     * @return
     */
    @Bean
    public RedisCacheManager cacheManager1Day(RedisConnectionFactory connectionFactory) {

        RedisCacheConfiguration config = instanceConfig(3600 * 24L);
        return RedisCacheManager.builder(connectionFactory)
                .cacheDefaults(config)
                .transactionAware()
                .build();
    }

    private RedisCacheConfiguration instanceConfig(Long ttl) {

        Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(Object.class);
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
        objectMapper.registerModule(new JavaTimeModule());
        // 去掉各种@JsonSerialize注解的解析
        objectMapper.configure(MapperFeature.USE_ANNOTATIONS, false);
        // 只针对非空的值进行序列化
        objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
        // 将类型序列化到属性json字符串中
        objectMapper.activateDefaultTyping(LaissezFaireSubTypeValidator.instance ,
                ObjectMapper.DefaultTyping.NON_FINAL, JsonTypeInfo.As.PROPERTY);

        jackson2JsonRedisSerializer.setObjectMapper(objectMapper);

        return RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(Duration.ofSeconds(ttl))
                //.disableCachingNullValues()
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer));

    }