详解spring cloud hystrix请求缓存(request cache)

@Service
public class UserCacheService {
  @Autowired
  private UserFeignClient userFeignClient;

  /**
   * @HystrixCommand 的requestCache.enabled 可控制是否支持缓存
   * 只有加了@CacheResult才能缓存，即使requestCache.enabled=true
   * @param id  用户id
   * @return 指定的用户
   */
  @CacheResult
  @HystrixCommand(commandProperties = {
      @HystrixProperty(name="requestCache.enabled",value = "true")
  })
  public User findUserById(Integer id){
    return userFeignClient.findUserById(id);
  }
}

 @CacheResult
  @HystrixCommand(commandProperties = {
      @HystrixProperty(name="requestCache.enabled",value = "true")
  })
  public User findUserByIdAndName(@CacheKey Integer id,String name){
    return userFeignClient.findUserById(id);
  }

/**
   * 通过@CacheRemove 注解指定当调用findUserById时将此方法的缓存删除
   * @param id  用户id
   * @param name 用户姓名
   * @return 指定的用户
   */
  @CacheResult
  @CacheRemove(commandKey = "findUserById")
  @HystrixCommand(commandProperties = {
      @HystrixProperty(name="requestCache.enabled",value = "true")
  })
  public User findUserByIdAndName2(@CacheKey Integer id,String name){
    return userFeignClient.findUserById(id);
  }