springCloud3---ribbon
同一份代码，改变端口，就可以启动多个同名但是端口不一样的微服务。
客户端通过nginx来调用后面的多个用户微服务来实现负载均衡，这是服务端负载均衡。
客户端有一个组件，可以知道当前有几个用户微服务的ip和端口，客户端实现一个负载均衡算法，直接去调用用户微服务。Ribbon是实现了客户端负载均衡的组件。
Ribbon选择一个在同一个zone且负载少的eureka，从中拉取可用的服务提供者列表，放到客户端，然后在客户端实现一个负载均衡的算法，最后命中到某个节点。Ribbon提供了多种算法：轮询、随机、根据响应时间。默认负载均衡的策略是轮询。
通过代码自定义配置ribbon：
package com.itmuch.cloud; import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.ribbon.RibbonClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.FilterType;
import org.springframework.web.client.RestTemplate; @SpringBootApplication
@EnableEurekaClient
@RibbonClient(name = "microservice-provider-user", configuration = TestConfiguration.class)
//@ComponentScan扫的是他所在的包和子包
@ComponentScan(excludeFilters = { @ComponentScan.Filter(type = FilterType.ANNOTATION, value = ExcludeFromComponentScan.class) })
public class ConsumerMovieRibbonApplication { @Bean
@LoadBalanced//就一个注解。@LoadBalanced整合了ribbon,让RestTemplate具备负载均衡的能力
public RestTemplate restTemplate() {
return new RestTemplate();
} public static void main(String[] args) {
SpringApplication.run(ConsumerMovieRibbonApplication.class, args);
}
}
package com.itmuch.cloud;
public @interface ExcludeFromComponentScan {
}
package com.itmuch.cloud; import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration; import com.netflix.loadbalancer.IRule;
import com.netflix.loadbalancer.RandomRule; @Configuration
@ExcludeFromComponentScan//否则所有的ribbon客户端都会使用RandomRule这个规则
public class TestConfiguration {
// @Autowired
// IClientConfig config; @Bean
public IRule ribbonRule() {
return new RandomRule(); //随机选取一个微服务，也可以自己定义路由规则。
}
}
package com.itmuch.cloud.controller; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.loadbalancer.LoadBalancerClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate; import com.itmuch.cloud.entity.User; @RestController
public class MovieController {
@Autowired
private RestTemplate restTemplate;
@Autowired
private LoadBalancerClient loadBalancerClient; @GetMapping("/movie/{id}")
public User findById(@PathVariable Long id) {
// http://localhost:7900/simple/，microservice-provider-user是注册到eureka之后的一个虚拟主机名（页面有，microservice-provider-user工程的虚拟主机名）。
//microservice-provider-user工程的配置文件中spring.application.name中定义。
// VIP virtual IP。不再是通过服务提供者的ip和端口访问了。
// HAProxy Heartbeat
//spring:application:name:microservice-provider-user
return this.restTemplate.getForObject("http://microservice-provider-user/simple/" + id, User.class);
} @GetMapping("/test")
public String test() {
//如果microservice-provider-user微服务有多个，可以看出命中的是哪个ip端口
ServiceInstance serviceInstance = this.loadBalancerClient.choose("microservice-provider-user");
System.out.println("111" + ":" + serviceInstance.getServiceId() + ":" + serviceInstance.getHost() + ":" + serviceInstance.getPort()); ServiceInstance serviceInstance2 = this.loadBalancerClient.choose("microservice-provider-user2");
System.out.println("222" + ":" + serviceInstance2.getServiceId() + ":" + serviceInstance2.getHost() + ":" + serviceInstance2.getPort()); return "1";
}
}
spring:
application:
name: microservice-consumer-movie-ribbon #自己的工程名字
server:
port: 8010
eureka:
client:
healthcheck:
enabled: true
serviceUrl:
defaultZone: http://user:password123@localhost:8761/eureka #eureka server的地址
instance:
prefer-ip-address: true
<?xml version="1.0" encoding="UTF-8"?>
<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> <artifactId>microservice-consumer-movie-ribbon</artifactId>
<packaging>jar</packaging> <parent>
<groupId>com.itmuch.cloud</groupId>
<artifactId>microservice-spring-cloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent> <properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties> <dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency> <!-- ribbon注册到eureka上面去 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency> <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
</dependencies>
</project>
通过配置文件自定义ribbon：
package com.itmuch.cloud; import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate; @SpringBootApplication
@EnableEurekaClient
public class ConsumerMovieRibbonApplication { @Bean
@LoadBalanced//就一个注解。@LoadBalanced整合了ribbon,让RestTemplate具备负载均衡的能力
public RestTemplate restTemplate() {
return new RestTemplate();
} public static void main(String[] args) {
SpringApplication.run(ConsumerMovieRibbonApplication.class, args);
}
}
package com.itmuch.cloud.controller; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.loadbalancer.LoadBalancerClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate; import com.itmuch.cloud.entity.User; @RestController
public class MovieController {
@Autowired
private RestTemplate restTemplate;
@Autowired
private LoadBalancerClient loadBalancerClient; @GetMapping("/movie/{id}")
public User findById(@PathVariable Long id) {
// http://localhost:7900/simple/
// VIP virtual IP
// HAProxy Heartbeat ServiceInstance serviceInstance = this.loadBalancerClient.choose("microservice-provider-user");
System.out.println("===" + ":" + serviceInstance.getServiceId() + ":" + serviceInstance.getHost() + ":" + serviceInstance.getPort()); return this.restTemplate.getForObject("http://microservice-provider-user/simple/" + id, User.class);
} @GetMapping("/test")
public String test() {
ServiceInstance serviceInstance = this.loadBalancerClient.choose("microservice-provider-user");
System.out.println("111" + ":" + serviceInstance.getServiceId() + ":" + serviceInstance.getHost() + ":" + serviceInstance.getPort()); ServiceInstance serviceInstance2 = this.loadBalancerClient.choose("microservice-provider-user2");
System.out.println("222" + ":" + serviceInstance2.getServiceId() + ":" + serviceInstance2.getHost() + ":" + serviceInstance2.getPort()); return "1";
}
}
spring:
application:
name: microservice-consumer-movie-ribbon
server:
port: 8010
eureka:
client:
healthcheck:
enabled: true
serviceUrl:
defaultZone: http://user:password123@localhost:8761/eureka
instance:
prefer-ip-address: true
microservice-provider-user: #请求这个微服务的时候
ribbon: #ribbon配置
NFLoadBalancerRuleClassName: com.netflix.loadbalancer.RandomRule #随机的rule去负载均衡
<?xml version="1.0" encoding="UTF-8"?>
<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> <artifactId>microservice-consumer-movie-ribbon-properties-customizing</artifactId>
<packaging>jar</packaging> <parent>
<groupId>com.itmuch.cloud</groupId>
<artifactId>microservice-spring-cloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent> <properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties> <dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency> <dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency> <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
</dependencies>
</project>
Ribbon禁止eureka：
package com.itmuch.cloud; import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate; @SpringBootApplication
@EnableEurekaClient
public class ConsumerMovieRibbonApplication { @Bean
@LoadBalanced
public RestTemplate restTemplate() {
return new RestTemplate();
} public static void main(String[] args) {
SpringApplication.run(ConsumerMovieRibbonApplication.class, args);
}
}
package com.itmuch.cloud.controller; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.loadbalancer.LoadBalancerClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate; import com.itmuch.cloud.entity.User; @RestController
public class MovieController {
@Autowired
private RestTemplate restTemplate;
@Autowired
private LoadBalancerClient loadBalancerClient; @GetMapping("/movie/{id}")
public User findById(@PathVariable Long id) {
// http://localhost:7900/simple/
// VIP virtual IP
// HAProxy Heartbeat ServiceInstance serviceInstance = this.loadBalancerClient.choose("microservice-provider-user");
System.out.println("===" + ":" + serviceInstance.getServiceId() + ":" + serviceInstance.getHost() + ":" + serviceInstance.getPort()); return this.restTemplate.getForObject("http://microservice-provider-user/simple/" + id, User.class);
} @GetMapping("/test")
public String test() {
ServiceInstance serviceInstance = this.loadBalancerClient.choose("microservice-provider-user");
System.out.println("111" + ":" + serviceInstance.getServiceId() + ":" + serviceInstance.getHost() + ":" + serviceInstance.getPort()); ServiceInstance serviceInstance2 = this.loadBalancerClient.choose("microservice-provider-user2");
System.out.println("222" + ":" + serviceInstance2.getServiceId() + ":" + serviceInstance2.getHost() + ":" + serviceInstance2.getPort()); return "1";
}
}
spring:
application:
name: microservice-consumer-movie-ribbon
server:
port: 8010
eureka:
client:
healthcheck:
enabled: true
serviceUrl:
defaultZone: http://user:password123@localhost:8761/eureka
instance:
prefer-ip-address: true
ribbon:
eureka:
enabled: false #禁止ribbon中的eureka
microservice-provider-user: #请求这个微服务的时候（此时这个微服务有7900.7901.7904三个微服务），只访问7900
ribbon:
listOfServers: localhost:7900
<?xml version="1.0" encoding="UTF-8"?>
<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> <artifactId>microservice-consumer-movie-ribbon-without-eureka</artifactId>
<packaging>jar</packaging> <parent>
<groupId>com.itmuch.cloud</groupId>
<artifactId>microservice-spring-cloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent> <properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties> <dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency> <dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency> <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
</dependencies>
</project>
springCloud3---ribbon的更多相关文章
- Devexpress Ribbon Add Logo
一直在网上找类似的效果.在Devpexress控件里面的这个是一个Demo的.没法查看源代码.也不知道怎么写的.所以就在网上搜索了半天的. 终于找到类似的解决办法. 可以使用重绘制的办法的来解决. [ ...
- 问题解决——MFC Ribbon 响应函数 错乱 执行其他函数
==================================声明================================== 本文原创,转载在正文中显要的注明作者和出处,并保证文章的完 ...
- 问题解决——MFC Ribbon 添加图标
=================================版权声明================================= 版权声明:本文为博主原创文章 未经许可不得转载 请通过右 ...
- Office2013插件开发Outlook篇（2）-- Ribbon
一.获取当前实例 在Ribbon1的任何方法中调用如下代码,可获取当前实例. 如: Application application = new Application(); var list = ap ...
- WPF中Ribbon控件的使用
这篇博客将分享如何在WPF程序中使用Ribbon控件.Ribbon可以很大的提高软件的便捷性. 上面截图使Outlook 2010的界面,在Home标签页中,将所属的Menu都平铺的布局,非常容易的可 ...
- sharepont 2013 隐藏Ribbon 菜单
引用:C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\15\ISAPI\Microsoft.Web.Comma ...
- 使用vs2010创建MFC C++ Ribbon程序
Your First MFC C++ Ribbon Application with Visual Studio 2010 Earlier this month, I put together my ...
- E-Form++图形可视化源码库新增同BCGSoft的Ribbon结合示例
2015年11月20日,来自UCanCode E-Form++源码库的开发团队消息,E-Form++正式提供了同BCGSoft的Ribbon界面风格相结合的示例,如下图: 下载此示例请访问: http ...
- DotNetBar 第2课，窗口设置 Ribbon Form 样式
1. 新增 windows 窗体时,选 Ribbon Form 2. 窗体继承 Office2007RibbonForm 3. 设计窗口下面,删除 删除styleManager1 组件 窗口效果如下 ...
- MSCRM 2013/2015 Ribbon Editor
由于新版本2015的解决方案与之前有变化,因此许多老的Tools已经不能使用,推荐给大家新的Ribbon Editor Tool. 下载地址: http://www.develop1.net/publ ...
随机推荐
- 剑指 offer set 19 翻转单词顺序 && 字符串左旋
题目 1. 翻转单词 student. a am I 转换成 I am a student. 2. 字符串左旋 abba 1 转成 bbaa 总结 1. 先对每个单词旋转, 再整齐旋转 2. 先翻转一 ...
- Android 蓝牙学习
Android 蓝牙学习 学习缘由 上个礼拜公司要开发个简单的五子棋游戏!其中一个需求就是支持蓝牙对战!所以苦逼的我学习蓝牙方面的知识了! 简介 Bluetooth是目前使用最广泛的无线通讯协议,近距 ...
- java基础---->Java中异常的使用（二）
这一篇博客用例子讲述一下异常的处理过程.那些 我们一直惴惴不安 又充满好奇的未来 会在心里隐隐约约地觉得它们是明亮的. 异常的执行过程 一.实例一:return语句 public class Exce ...
- c#基础 第八讲
static void Main(string[] args) { while (true)//一直循环 { Random r = new Random();//创建随机函数r int[] caipi ...
- 基于开源博客系统（jpress）搭建网站
基于开源博客系统(jpress)搭建网站 JPress 使用 Java8 开发,基于流行的JFinal和Jboot框架. 目前JPress已经内置的文章和页面其实是两个模块,可以移除和新增其他模块,因 ...
- 全链路追踪spring-cloud-sleuth-zipkin
微服务架构下 多个服务之间相互调用,在解决问题的时候,请求链路的追踪是十分有必要的,鉴于项目中采用的spring cloud架构,所以为了方便使用,便于接入等 项目中采用了spring cloud s ...
- 伪造堆块绕过unlink检查(ctf-QiangWangCup-2015-shellman)
目录 堆溢出点 伪造空闲堆块 释放时重写指向伪造堆块的指针 如何利用 参考资料 堆溢出点 图1 堆溢出点 在edit函数中,没有对输入的长度和原来的长度做判断. 伪造空闲堆块 正常 ...
- YAML 语言
1. YAML 介绍 YAML:以数据为中心,比JSON,XML更适合做配置文件; //示例: server: port: 8081 //此处有空格 2. YAML 基本语法 使用缩进表示层级关系; ...
- Scala函数特性
通常情况下,函数的參数是传值參数:即參数的值在它被传递给函数之前被确定.可是,假设我们须要编写一个接收參数不希望立即计算.直到调用函数内的表达式才进行真正的计算的函数. 对于这样的情况.Scala提供 ...
- linux 系统性能指标
一.查看CPU使用情况 cpu使用率反映的是当前cpu的繁忙程度,忽高忽低的原因在于占用cpu处理时间的进程可能处于io等待状态但却还未释放进入wait. 平均负载(loadaverage)是指某段时 ...