zuul熔断代码

package com.sun.fallback;

import java.io.ByteArrayInputStream;

import java.io.IOException;

import java.io.InputStream;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.cloud.netflix.zuul.filters.route.FallbackProvider;

import org.springframework.http.HttpHeaders;

import org.springframework.http.HttpStatus;

import org.springframework.http.MediaType;

import org.springframework.http.client.ClientHttpResponse;

import org.springframework.stereotype.Component;

@Component

public class ServiceHiFallbackProvider implements FallbackProvider {

    private final Logger logger = LoggerFactory.getLogger(FallbackProvider.class);

    //指定要处理的 service。

    @Override

    public String getRoute() {

        return "service-ribbon";

    }

    @Override

    public ClientHttpResponse fallbackResponse(String route, Throwable cause) {

        if (cause != null && cause.getCause() != null) {

            String reason = cause.getCause().getMessage();

            logger.info("Excption {}",reason);

        }

        return fallbackResponse();

    }

    public ClientHttpResponse fallbackResponse() {

        return new ClientHttpResponse() {

            @Override

            public HttpStatus getStatusCode() throws IOException {

                return HttpStatus.OK;

            }

            @Override

            public int getRawStatusCode() throws IOException {

                return 200;

            }

            @Override

            public String getStatusText() throws IOException {

                return "OK";

            }

            @Override

            public void close() {

            }

            @Override

            public InputStream getBody() throws IOException {

                return new ByteArrayInputStream("The service is unavailable.".getBytes());

            }

            @Override

            public HttpHeaders getHeaders() {

                HttpHeaders headers = new HttpHeaders();

                headers.setContentType(MediaType.APPLICATION_JSON);

                return headers;

            }

        };

    }

}

zuul详细讲解请看https://www.cnblogs.com/PPBoy/p/9395151.html

根据https://blog.csdn.net/forezp/article/details/81041012#commentsedit

调整zuul熔断。亲测可用，

参考文档：

https://blog.csdn.net/ityouknow/article/details/79215698

https://www.cnblogs.com/yjmyzz/p/spring-cloud-zuul-demo.html

有个问题：每个服务都需要些熔断么？那成百上千的服务，怎么弄？

而且原贴是调用ribbon负载均衡，ribbon的熔断如何和zuul结合起来？