dubbo-服务治理以及RMI了解

解决技术方案--

找具体的service在那台机器 service下线了怎么办？ 请求负载倾斜了怎么办？ 服务治理

// rmi

import java.rmi.Remote;
public interface ISayService extends Remote{
    // 记住要抛出异常，否则启动报错
    public String say(String name) throws Exception;
}

public class SayServiceImpl implements ISayService {
    @Override
    public String say(String name) {
        return name + " say : haha";
    }
}

import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.rmi.server.UnicastRemoteObject;
public class ServiceMain {
    public static void main(String[] args) throws RemoteException {
        // 实例化 要暴露给远程的方法/接口
        ISayService impl = new SayServiceImpl();
        // 开启本地服务
        ISayService sayService = (ISayService) UnicastRemoteObject.exportObject(impl, 666);
        // 服务注册中心
        Registry registry = LocateRegistry.createRegistry(999);
        // 注册服务
        registry.rebind("sayService", sayService);
    }
}

import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
public class CustomerMain {
    public static void main(String[] args) throws Exception {
        // 注册中心
        Registry registry = LocateRegistry.getRegistry(999);
        // 发现服务
        ISayService sayService = (ISayService) registry.lookup("sayService");
        // 调起服务
        String str = sayService.say("三哥");
        System.out.println("str:" + str);
    }
}