spring-cloud - Spring Cloud config feign fallback(CircuitBreaker) 规则

Question

现在我在 hystrix 中使用 feign，结果发现，当 fallback 方法在 5 秒内调用 20 次时，Circuit 将变为 Open 状态。我怎样才能改变这个规则。例如，当fallback方法在5s内调用50次时，让Circuit状态变为open，或者通过fallback回调率。这是我的主要 java 代码。

ConsumerApplication.java

@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
@EnableCircuitBreaker
@RibbonClients({@RibbonClient(name = "cloud-provider", configuration = CloudProviderConfiguration.class)})
public class ConsumerApplication {
    public static void main(String[] args) {
        SpringApplication.run(ConsumerApplication.class, args);
    }
}

UserFeignClient.java

@FeignClient(name = "cloud-provider", fallback = UserFeignClient.HystrixClientFallback.class)
public interface UserFeignClient {
    @RequestMapping("/{id}")
    BaseResponse findByIdFeign(@RequestParam("id") Long id);

    @RequestMapping("/add")
    BaseResponse addUserFeign(UserVo userVo);

    @Component
    class HystrixClientFallback implements UserFeignClient {
        private static final Logger LOGGER = LoggerFactory.getLogger(HystrixClientFallback.class);

        @Override
        public BaseResponse findByIdFeign(@RequestParam("id") Long id) {
            BaseResponse response = new BaseResponse();
            response.setMessage("disable!!!!");
            return response;
        }

        @Override
        public BaseResponse addUserFeign(UserVo userVo) {
            BaseResponse response = new BaseResponse();
            response.setMessage("disable");
            return response;
        }
    }
}

Answer 1

这里描述了配置参数https://github.com/Netflix/Hystrix/wiki/Configuration

hystrix.command.default.circuitBreaker.sleepWindowInMilliseconds 更改您看到的 5 秒窗口。

hystrix.command.default.circuitBreaker.requestVolumeThreshold 默认为 20 个请求。