Spring Cloud之Feign客户端超时时间配置

时间：2023-03-10 04:54:42
Spring Cloud之Feign客户端超时时间配置

关于雪崩效应：

默认情况下tomcat只有一个线程去处理客户端发送的所有请求。高并发情况下，如果客户端请求都在同一接口，tomcat的所有线程池去处理，导致其他接口服务访问不了，等待。

Tomcat有个线程池，每个线程去处理客户端发送每次请求。

在parent项目里面再创建一个项目，common

Eureka server： 略

Member :

service

Spring Cloud之Feign客户端超时时间配置

package com.toov5.api.entity;

import lombok.Data;

@Data

public class UserEntity {

    private String name;

    private Integer age;

}
package com.toov5.api.service;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestParam;

import org.springframework.web.bind.annotation.RestController;

import com.toov5.api.entity.UserEntity;

import com.toov5.base.ResponseBase;

@RestController

public interface IMemberService {

    @RequestMapping("/getMember")  //接口加@RequestMapping 被其他项目调用时候 feign客户端可以继承

    public UserEntity getMember(@RequestParam("name") String name);

    @RequestMapping("/getUserInfo")

    public ResponseBase getUserInfo();

}

实现类：

Spring Cloud之Feign客户端超时时间配置

package com.toov5.api.service.impl;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestParam;

import org.springframework.web.bind.annotation.RestController;

import com.toov5.api.entity.UserEntity;

import com.toov5.api.service.IMemberService;

import com.toov5.base.BaseApiService;

import com.toov5.base.ResponseBase;

   //注意加在实现类上面！！！ 接口不能加 接口不能被实例化

@RestController

public class MemberServiceImpl extends BaseApiService implements IMemberService {

     @RequestMapping("/getMember")

    public UserEntity getMember(@RequestParam("name") String name) {

        UserEntity userEntity = new UserEntity();

        userEntity.setName(name);

        userEntity.setAge(10);

        return userEntity;

    }

     @RequestMapping("/getUserInfo")

     public ResponseBase getUserInfo() {

        try {

            Thread.sleep(1500);

        } catch (Exception e) {

        }

        return setResultSuccess("订单服务接口调用会员服务接口成功....");

    }

}

启动类

package com.toov5.api.service.impl;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

import org.springframework.cloud.openfeign.EnableFeignClients;

@SpringBootApplication (scanBasePackages={"com.toov5.*"})

@EnableEurekaClient

@EnableFeignClients

public class AppMember {

  public static void main(String[] args) {

    SpringApplication.run(AppMember.class, args);

}

}

yml

###服务启动端口号

server:

  port: 8000

###服务名称(服务注册到eureka名称)

spring:

    application:

        name: app-toov5-member

###服务注册到eureka地址

eureka:

  client:

    service-url:

           defaultZone: http://localhost:8100/eureka

###因为该应用为注册中心，不会注册自己

    register-with-eureka: true

###是否需要从eureka上获取注册信息

    fetch-registry: true

　pom：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <parent>

    <groupId>com.toov5</groupId>

    <artifactId>parent</artifactId>

    <version>0.0.1-SNAPSHOT</version>

  </parent>

  <artifactId>toov5-api-member-service-impl</artifactId>

  	<dependencies>

  	 	<dependency>

  	 	  <groupId>com.toov5</groupId>

           <artifactId>toov5-api-member-service</artifactId>

             <version>0.0.1-SNAPSHOT</version>

  	 	</dependency>

  	 	<dependency>

  	 	  <groupId>com.toov5</groupId>

            <artifactId>toov5-api-order-service</artifactId>

             <version>0.0.1-SNAPSHOT</version>

  	 	</dependency>

  	</dependencies>

</project>

Order:

service

Spring Cloud之Feign客户端超时时间配置

pom：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <parent>

    <groupId>com.toov5</groupId>

    <artifactId>toov5-api-service</artifactId>

    <version>0.0.1-SNAPSHOT</version>

  </parent>

  <artifactId>toov5-api-order-service</artifactId>

    <dependencies>

    <dependency>

      <groupId>com.toov5</groupId>

    <artifactId>toov5.common</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    </dependency>

  </dependencies>

</project>

　接口

package com.toov5.api.service;

import org.springframework.web.bind.annotation.RequestMapping;

import com.toov5.base.ResponseBase;

public interface IOrderService {

   //订单服务带哦用会员服务接口信息fegin

    @RequestMapping("/orderToMember")

    public String orderToMember(String name);

    //订单服务接口调用会员服务接口

    @RequestMapping("/orderToMemberUserInfo")

    public ResponseBase orderToMemberUserInfo();

}

　Spring Cloud之Feign客户端超时时间配置

pom：

<project xmlns="http://maven.apache.org/POM/4.0.0"

	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

	<modelVersion>4.0.0</modelVersion>

	<parent>

		<groupId>com.toov5</groupId>

		<artifactId>parent</artifactId>

		<version>0.0.1-SNAPSHOT</version>

	</parent>

	<artifactId>toov5-api-order-service-impl</artifactId>

	<dependencies>

		<dependency>

           <groupId>com.toov5</groupId>

			<artifactId>toov5-api-order-service</artifactId>

			<version>0.0.1-SNAPSHOT</version>

		</dependency>

     <dependency>

           <groupId>com.toov5</groupId>

			<artifactId>toov5-api-member-service</artifactId>

			<version>0.0.1-SNAPSHOT</version>

		</dependency>

	</dependencies>

</project>

　　

package com.toov5.api.service.impl;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;

import com.toov5.api.entity.UserEntity;

import com.toov5.api.feign.MemberServiceFeign;

import com.toov5.api.service.IOrderService;

import com.toov5.base.ResponseBase;

@RestController

public class OrderServiceImpl implements IOrderService {

        @Autowired

      private MemberServiceFeign memberServiceFeign; 

      @RequestMapping("/orderToMmeber")

      public String orderToMember(String name) {

      UserEntity user = memberServiceFeign.getMember(name);

        return  user==null ? "没有找到用户先关信息" : user.toString();

    }

     @RequestMapping("/orderToMemberUserInfo")

      public ResponseBase orderToMemberUserInfo() {

          return  memberServiceFeign.getUserInfo();

    }

}
package com.toov5.api.feign;

import org.springframework.cloud.openfeign.FeignClient;

import com.toov5.api.service.IMemberService;

//避免了冗余代码 直接过来就ok了

@FeignClient("app-toov5-member")

public interface MemberServiceFeign extends IMemberService {

   //实体类是存放接口项目还是存放在实现项目 实体类存放在接口项目里面

    //实体类和定义接口信息存放在接口项目

    //代码实现放在接口实现类里面

}

yml：

###服务启动端口号

server:

  port: 8001

###服务名称(服务注册到eureka名称)

spring:

    application:

        name: app-toov5-order

###服务注册到eureka地址

eureka:

  client:

    service-url:

           defaultZone: http://localhost:8100/eureka

###因为该应用为注册中心，不会注册自己

    register-with-eureka: true

###是否需要从eureka上获取注册信息

    fetch-registry: true

    ###设置feign客户端超时时间
ribbon:

###指的是建立连接所用的时间，适用于网络状况正常的情况下，两端连接所用的时间。

 ReadTimeout: 5000

###指的是建立连接后从服务器读取到可用资源所用的时间。

 ConnectTimeout: 5000

  #spring cloud 默认开启ribbon

　　

　启动类

package com.toov5.api;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.cloud.netflix.eureka.EnableEurekaClient;

import org.springframework.cloud.openfeign.EnableFeignClients;

@SpringBootApplication(scanBasePackages={"com.toov5.*"})

@EnableEurekaClient

@EnableFeignClients

public class AppOrder {

   public static void main(String[] args) {

    SpringApplication.run(AppOrder.class, args);

}

}

　结果：

Spring Cloud之Feign客户端超时时间配置