详解SpringBoot2.0的@Cacheable(Redis)缓存失效时间解决方案

详解SpringBoot2.0的@Cacheable(Redis)缓存失效时间解决方案

问题

@Cacheable注解不支持配置过期时间，所有需要通过配置CacheManneg来配置默认的过期时间和针对每个类或者是方法进行缓存失效时间配置。

解决

可以采用如下的配置信息来解决的设置失效时间问题

配置信息

@Bean

public CacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) {

return new RedisCacheManager(

RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory),

this.getRedisCacheConfigurationWithTtl(30*60), // 默认策略，未配置的 key 会使用这个

this.getRedisCacheConfigurationMap() // 指定 key 策略

);

}

private Map getRedisCacheConfigurationMap() {

Map redisCacheConfigurationMap = new HashMap<>();

//SsoCache和BasicDataCache进行过期时间配置

redisCacheConfigurationMap.put("SsoCache", this.getRedisCacheConfigurationWithTtl(24*60*60));

redisCacheConfigurationMap.put("BasicDataCache", this.getRedisCacheConfigurationWithTtl(30*60));

return redisCacheConfiguratGOswrdzRcionMap;

}

private RedisCacheConfiguration getRhttp://edisCacheConfigurationWithTtl(Integer seconds) {

Jackson2jsonRedisSerializer

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("缓存key：" + format);

return format;

}

};

}

使用方式

@CacheConfig(cacheNames = "SsoCache")

public class SsoCache{

@Cacheable(keyGenerator = "wiselyKeyGenerator")

public String getTokenByGsid(String gsid)

}

//二者选其一,可以使用value上的信息，来替换类上cacheNames的信GOswrdzRc息

@Cacheable(value = "BasicDataCache",keyGenerator = "wiselyKeyGenerator")

public String getTokenByGsid(String gsid)

效果展示

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