【Spring-Cloud】核心源码分析 高级篇

好几年没有更新博客了，满屋子都是灰尘

1. Ribbon源码之负载均衡

1.1 分析入口 @LoadBalanced

只提出最重要的代码 代码里 “// 重点” 的地方

public class RibbonLoadBalancerClient implements LoadBalancerClient {
   
	public <T> T execute(String serviceId, LoadBalancerRequest<T> request, Object hint) throws IOException {
   
		ILoadBalancer loadBalancer = getLoadBalancer(serviceId);
		Server server = getServer(loadBalancer, hint); // 重点
		if (server == null) {
   
			throw new IllegalStateException("No instances available for " + serviceId);
		}
		RibbonServer ribbonServer = new RibbonServer(serviceId, server, isSecure(server,
				serviceId), serverIntrospector(serviceId).getMetadata(server));

		return execute(serviceId, ribbonServer, request)