一、Ribbon负载均衡

一个服务对应一个LoadBalancer，一个LoadBalancer只有一个Rule，LoadBalancer记录服务的注册地址，提供更新服务的注册地址，Rule提供从服务的注册地址中找出一个地址的规则。

 

二、 自定义负载均衡

本文自定义负载均衡规则提供根据指定URI优先转发到特定的机器的功能。

 

三、实现代码

（1）负载均衡实现类

public class MicroServiceLoadBalancer<T extends Server> extends DynamicServerListLoadBalancer<T> {public MicroServiceLoadBalancer() {}public MicroServiceLoadBalancer(IClientConfig clientConfig, IRule rule, IPing ping, ServerList<T> serverList, ServerListFilter<T> filter, ServerListUpdater serverListUpdater) {super(clientConfig, rule, ping, serverList, filter, serverListUpdater);}public MicroServiceLoadBalancer(IClientConfig clientConfig) {super(clientConfig);}@Overridepublic String toString() {StringBuilder sb = new StringBuilder("MicroServiceLoadBalancer:");sb.append(super.toString());sb.append("ServerList:" + String.valueOf(getServerListImpl()));return sb.toString();}
}

（2）application.yaml文件1配置

micro-service:ribbon:NFLoadBalancerClassName: com.mk.springcloud.gateway.loadbalance.MicroServiceLoadBalancer

（3）代码配置

public class MicroRibbonConfig {@Beanpublic ILoadBalancer microILoadBalancer(IClientConfig config, ServerList<Server> serverList, ServerListFilter<Server> serverListFilter, IRule rule, IPing ping, ServerListUpdater serverListUpdater) {return new MicroServiceLoadBalancer<>(config, rule, ping, serverList,serverListFilter, serverListUpdater);}}@RibbonClient(name = "micro-service", configuration = MicroRibbonConfig.class)
public class RibbonClientConfig {}