Springboot redis@Cacheable設定有効期限

テキスト https://segmentfault.com/q/1010000015203664
構想
注釈の使用時にkey生成ポリシーを指定する 

@Cacheable(value = "wxAccessToken", keyGenerator = "keyGenerator")
public AccessToken getAccessToken() {

  }
withInitialCacheConfigurationsメソッドで名前wxAccessTokenに有効期限を指定

@Bean
@Override
public KeyGenerator keyGenerator() {
    return (o,method,params)->{
        StringBuilder sb = new StringBuilder();
        sb.append(o.getClass().getName());
        sb.append(method.getName());
        for (Object param : params) {
            sb.append(param.toString());
        }
        return sb.toString();
    };
}

@Bean
public RedisCacheManager cacheManager(RedisConnectionFactory connectionFactory) {

    RedisCacheManager redisCacheManager = RedisCacheManager.builder(connectionFactory)
            .cacheDefaults(getRedisCacheConfigurationWithTtl(600))
            .withInitialCacheConfigurations(getRedisCacheConfigurationMap())
            .transactionAware()
            .build();

    log.info("   RedisCacheManager    ");
    return redisCacheManager;
}

private RedisCacheConfiguration getRedisCacheConfigurationWithTtl(Integer i){
    return RedisCacheConfiguration.defaultCacheConfig()
            .entryTtl(Duration.ofSeconds(i)) // *s     
            //   key      
            .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(keySerializer()))
            //   value      
            .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(valueSerializer()))
            //    null 
            .disableCachingNullValues();

}
private Map getRedisCacheConfigurationMap() {
    Map redisCacheConfigurationMap = new HashMap<>();
    redisCacheConfigurationMap.put("wxAccessToken", this.getRedisCacheConfigurationWithTtl(3000));

    return redisCacheConfigurationMap;
}