关于springboot:Springboot-注解-Cacheable自定义单个key设置expire超时时间-并在配置文件里配置

Springboot RedisCacheManager 类的配置 指定key的过期工夫 并在配置文件里配置

目标&成果

在springBoot中配置了RedisCache，当应用@Cacheable注解时，默认为redisCache，通过在配置文件里设置不同key的过期工夫，达到可自定义key过期工夫的成果。

计划

step 1

新建一个Map类,用于寄存要设置的key

@ConfigurationPropertiespublic class Properties {     private final Map<String, Duration> initCaches = Maps.newHashMap();     public Map<String, Duration> getInitCaches() {        return initCaches;    }}

step2

在redis配置类里编写cacheManager,并将map set进去

@Autowiredprivate Properties properties; @Beanpublic CacheManager cacheManager(RedisConnectionFactory connectionFactory) {    RedisCacheConfiguration defaultCacheConfig = RedisCacheConfiguration.defaultCacheConfig()            .entryTtl(Duration.ofMinutes(10)).disableCachingNullValues();     RedisCacheWriter redisCacheWriter = RedisCacheWriter.nonLockingRedisCacheWriter(connectionFactory);     ImmutableSet.Builder<String> cacheNames = ImmutableSet.builder();    ImmutableMap.Builder<String, RedisCacheConfiguration> cacheConfig = ImmutableMap.builder();    for (Map.Entry<String, Duration> entry : properties.getInitCaches().entrySet()) {        cacheNames.add(entry.getKey());        cacheConfig.put(entry.getKey(), defaultCacheConfig.entryTtl(entry.getValue()));    }     return RedisCacheManager.builder(redisCacheWriter)            .cacheDefaults(defaultCacheConfig)            .initialCacheNames(cacheNames.build())            .withInitialCacheConfigurations(cacheConfig.build())            .build();} 

step3

在Springboot yml文件里配置相干的key的过期工夫 就能够指定@Cacheable的value的过期工夫

//伪代码 @Cacheable(cacheNames = "fooboo", key = "#xxx", unless = "#result == null")public void fooboo(String xxx){}

applicaion.yml文件中设置

initCaches:
fooboo: 10m
fooboo1: 1h

则在redis缓存中fooboo的值，10分钟过期，fooboo1的值1小时过期