SpringCloud负载均衡笔记
本文内容纲要：
SpringCloud的负载均衡组件用的是Ribbon，这个东西就是服务消费者。它只是一个配置用的中转器，放在Zuul和EurekaClient之间用来转发的，它里面写了好多规则，用来指定负载的规则。
首先，Zuul：
application.yml
eureka:
client:
serviceUrl:
defaultZone:http://localhost:7087/eureka/
server:
port:7089
spring:
application:
name:service-zuul
zuul:
host:
maxTotalConnections:10000
maxPerRouteConnections:60000
routes:
api-a:
path:/dbmeta/**
serviceId:service-ribbon
api-b:
path:/kylin/**
serviceId:service-kylin
ribbon:
eureka:
enabled:false
service-ribbon:
ribbon:
listOfServers:http://localhost:7088,http://localhost:7091
ConnectTimeout:10000
ReadTimeout:30000
MaxTotalHttpConnections:10000
MaxConnectionsPerHost:60000
Application
packagecom.shinho;
importorg.springframework.boot.SpringApplication;
importorg.springframework.boot.autoconfigure.SpringBootApplication;
importorg.springframework.boot.builder.SpringApplicationBuilder;
importorg.springframework.cloud.netflix.eureka.EnableEurekaClient;
importorg.springframework.cloud.netflix.zuul.EnableZuulProxy;
@EnableZuulProxy
@SpringBootApplication
publicclassDbzuulApplication{
publicstaticvoidmain(String[]args){
SpringApplication.run(DbzuulApplication.class,args);
}
}
pom.xml
<?xmlversion="1.0"encoding="UTF-8"?>
<projectxmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.shinho</groupId>
<artifactId>dbzuul</artifactId>
<version>0.0.1</version>
<packaging>jar</packaging>
<name>dbzuul</name>
<description>DemoprojectforSpringBoot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.0.RELEASE</version>
<relativePath/><!--lookupparentfromrepository-->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Finchley.M9</spring-cloud.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-netflix-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-zuul</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>4.3.14.RELEASE</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-snapshots</id>
<name>SpringSnapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
<repository>
<id>spring-milestones</id>
<name>SpringMilestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-snapshots</id>
<name>SpringSnapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
<pluginRepository>
<id>spring-milestones</id>
<name>SpringMilestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
</project>
然后，Ribbon客户端
application.yml
eureka:
client:
serviceUrl:
defaultZone:http://localhost:7087/eureka
server:
port:7090
spring:
application:
name:service-ribbon
Config类
packagecom.config;
importorg.springframework.cloud.netflix.ribbon.ZonePreferenceServerListFilter;
importorg.springframework.context.annotation.Bean;
importorg.springframework.context.annotation.Configuration;
importcom.netflix.client.config.IClientConfig;
importcom.netflix.loadbalancer.BestAvailableRule;
importcom.netflix.loadbalancer.IPing;
importcom.netflix.loadbalancer.IRule;
importcom.netflix.loadbalancer.PingUrl;
importcom.netflix.loadbalancer.Server;
importcom.netflix.loadbalancer.ServerList;
importcom.netflix.loadbalancer.ServerListSubsetFilter;
importcom.shinho.DbribbonApplication;
@Configuration
publicclassMyConfig{
@Bean
publicIRuleribbonRule(){
returnnewBestAvailableRule();
}
@Bean
publicIPingribbonPing(){
returnnewPingUrl();
}
@Bean
publicServerList<Server>ribbonServerList(IClientConfigconfig){
returnnewDbribbonApplication.BazServiceList(config);
}
@Bean
publicServerListSubsetFilterserverListFilter(){
ServerListSubsetFilterfilter=newServerListSubsetFilter();
returnfilter;
}
}
Application
packagecom.shinho;
importorg.springframework.boot.SpringApplication;
importorg.springframework.boot.autoconfigure.SpringBootApplication;
importorg.springframework.cloud.netflix.ribbon.RibbonClient;
importcom.config.MyConfig;
importcom.netflix.client.config.IClientConfig;
importcom.netflix.loadbalancer.ConfigurationBasedServerList;
@SpringBootApplication
@RibbonClient(name="service-ribbon",configuration=MyConfig.class)
publicclassDbribbonApplication{
publicstaticvoidmain(String[]args){
SpringApplication.run(DbribbonApplication.class,args);
}
publicstaticclassBazServiceListextendsConfigurationBasedServerList{
publicBazServiceList(IClientConfigconfig){
super.initWithNiwsConfig(config);
}
}
}
pom.xml
<?xmlversion="1.0"encoding="UTF-8"?>
<projectxmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.shinho</groupId>
<artifactId>dbribbon</artifactId>
<version>0.0.1</version>
<packaging>jar</packaging>
<name>dbribbon</name>
<description>DemoprojectforSpringBoot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.0.RELEASE</version>
<relativePath/><!--lookupparentfromrepository-->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<spring-cloud.version>Finchley.M9</spring-cloud.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-netflix-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>4.3.14.RELEASE</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-snapshots</id>
<name>SpringSnapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
<repository>
<id>spring-milestones</id>
<name>SpringMilestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-snapshots</id>
<name>SpringSnapshots</name>
<url>https://repo.spring.io/snapshot</url>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
<pluginRepository>
<id>spring-milestones</id>
<name>SpringMilestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
</project>
客户端就和其它的一样了，注意客户端的Service-id不要和Ribbon的重复，Ribbon的Service-id是要单独的哦。
本文内容总结：
原文链接：https://www.cnblogs.com/wpcnblog/p/9021582.html