第 280 章 Ribbon 组件

作为 Camel 2.18 版提供

ribbon 组件提供对客户端侧负载平衡的 Netflix Ribbon 使用。

Maven 用户需要将以下依赖项添加到其 pom.xml 中： 

<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-ribbon</artifactId>
    <version>x.x.x</version>
    <!-- use the same version as your Camel core version -->
</dependency>

当使用 ServiceCall EIP 时，这个组件有助于在客户端中应用负载平衡功能。

280.1. 配置

  • Programmatic 

    RibbonConfiguration configuration = new RibbonConfiguration();
configuration.addProperties("ServerListRefreshInterval", "250");

RibbonLoadBalancer loadBalancer = new RibbonLoadBalancer(configuration);

from("direct:start")
    .serviceCall()
        .name("myService")
        .loadBalancer(loadBalancer)
        .consulServiceDiscovery()
        .end()
    .to("mock:result");

  • Spring Boot

    application.properties

    camel.cloud.ribbon.properties[ServerListRefreshInterval] = 250

    Routes

    from("direct:start")
    .serviceCall()
        .name("myService")
        .ribbonLoadBalancer()
        .consulServiceDiscovery()
        .end()
    .to("mock:result");

  • XML 

    <route>
    <from uri="direct:start"/>
    <serviceCall name="myService">
        <!-- enable ribbon load balancer -->
        <ribbonLoadBalancer>
            <properties key="ServerListRefreshInterval" value="250"/>
        </ribbonLoadBalancer>
    </serviceCall>
</route>