Apache Dubbo |ˈdʌbəʊ| 是一款高性能、轻量级的开源Java RPC框架，它提供了三大核心能力：面向接口的远程方法调用，智能容错和负载均衡，以及服务自动注册和发现。

https://github.com/apache/dubbo-spring-boot-project

首先，我们假设存在一个 Dubbo RPC API ，由服务提供方为服务消费方暴露接口 :

public interface DemoService {

    String sayHello(String name);

}

1. 实现 DemoService 接口

   @Service(version = "1.0.0")
   public class DefaultDemoService implements DemoService {
   
       /**
        * The default value of ${dubbo.application.name} is ${spring.application.name}
        */
       @Value("${dubbo.application.name}")
       private String serviceName;
   
       public String sayHello(String name) {
           return String.format("[%s] : Hello, %s", serviceName, name);
       }
   }

2. 编写 Spring Boot 引导程序

   @EnableAutoConfiguration
   public class DubboProviderDemo {
   
       public static void main(String[] args) {
           SpringApplication.run(DubboProviderDemo.class,args);
       }
   }

3. 配置 application.properties :

   # Spring boot application
   spring.application.name=dubbo-auto-configuration-provider-demo
   # Base packages to scan Dubbo Component: @org.apache.dubbo.config.annotation.Service
   dubbo.scan.base-packages=org.apache.dubbo.spring.boot.sample.provider.service
   
   # Dubbo Application
   ## The default value of dubbo.application.name is ${spring.application.name}
   ## dubbo.application.name=${spring.application.name}
   
   # Dubbo Protocol
   dubbo.protocol.name=dubbo
   dubbo.protocol.port=12345
   
   ## Dubbo Registry
   dubbo.registry.address=N/A

1. 通过 @Reference 注入 DemoService :

   @EnableAutoConfiguration
   public class DubboAutoConfigurationConsumerBootstrap {
   
       private final Logger logger = LoggerFactory.getLogger(getClass());
   
       @Reference(version = "1.0.0", url = "dubbo://127.0.0.1:12345")
       private DemoService demoService;
   
       public static void main(String[] args) {
           SpringApplication.run(DubboAutoConfigurationConsumerBootstrap.class).close();
       }
   
       @Bean
       public ApplicationRunner runner() {
           return args -> {
               logger.info(demoService.sayHello("mercyblitz"));
           };
       }
   }

2. 配置 application.yml :

   spring:
     application:
       name: dubbo-auto-configure-consumer-sample

确保 Dubbo 服务提供方服务可用， DubboProviderDemo 运行方可正常。

1.从github上下载源码方式

git clone https://github.com/alibaba/nacos.git
cd nacos/
mvn -Prelease-nacos -Dmaven.test.skip=true clean install -U  
ls -al distribution/target/

// change the $version to your actual path
cd distribution/target/nacos-server-$version/nacos/bin

2.下载编译后压缩包方式

unzip nacos-server-$version.zip 或者 tar -xvf nacos-server-$version.tar.gz
cd nacos/bin

启动命令(standalone代表着单机模式运行，非集群模式):

sh startup.sh -m standalone

cmd startup.cmd

建议通过阿里云仓库下载zipKin jar包（官网下载很慢）

地址：https://maven.aliyun.com/mvn/search 搜索zipkin-server，选择exec.jar后缀的下载

jar包路径下执行：

java -jar zipkin-server-x.xx.x（版本号,本例选择版本为2.21.4）-exec.jar

服务启动后默认可以通过9411端口访问zipkin的监控页面

此启动方式采用默认的In-Memory方式存储，无法持久化。线上环境需搭配MySql或Cassandra或Elasticsearch进行持久化，还可加入mq增加吞吐量