Spring Cloud之网关Zuul开启重试

最新推荐文章于 2022-10-27 17:45:04 发布

原创最新推荐文章于 2022-10-27 17:45:04 发布 · 置顶 · 1.8k 阅读

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本文详细介绍了如何在SpringCloud网关中配置重试功能，包括添加依赖、启用重试注解、配置YAML文件等内容，适用于需要增强微服务调用可靠性的场景。

在Spring Cloud体系中，如果网关要支持重试要配置的点蛮多的，等我一一道来：

网关工程pom.xml中要加入org.springframework.retry依赖

<dependencies>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-zuul</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-eureka</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.retry</groupId>
			<artifactId>spring-retry</artifactId>
		</dependency>
	</dependencies>

网关应用启动类要添加@EnableRetry注解

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
import org.springframework.retry.annotation.EnableRetry;

@SpringBootApplication
@EnableZuulProxy
@EnableEurekaClient
@EnableRetry
public class ZuulApplication {
  public static void main(String[] args) {
    SpringApplication.run(ZuulApplication.class, args);
  }
}

application.yml配置

server:
  port: 8060
spring:
  application:
    name: microservice-gateway-zuul
  #打开负载局衡器支持重试开关   
  cloud:
    loadbalancer:
      retry:
        enabled: true

eureka:
  client:
    service-url:
      defaultZone: http://peer1:8761/eureka/
  instance:
    prefer-ip-address: true

logging:                                
  config: classpath:logback-spring.xml

#打开网关支持重试开关
zuul:
  retryable: true      

#要支持重试的微服务的配置
microservice-provider-user:
  ribbon:
    ConnectionTimeout: 3000
    ReadTimeout: 6000
    #打开所有操作都支持重试的开关
    OkToRetryOnAllOperations: true
    #在其他Server上重试的次数(除去首次)
    MaxAutoRetriesNextServer: 3
    #在出错或者超时的Server上重试的次数(除去首次)
    MaxAutoRetries: 0

#网关等待微服务处理请求的超时时间
hystrix.command.default.execution.isolation.thread.timeoutInMilliseconds: 60000

首先要配置 spring.cloud.loadbalancer.retry.enable = true
再次要配置zuul.retryable = true
最后针对一个要支持重试的微服务，本例中服务名称为microservice-provider-user