Spring cloud alibaba（官方文档）作为Nacos客户端

https://github.com/alibaba/spring-cloud-alibaba/blob/2023.x/spring-cloud-alibaba-examples/nacos-example/readme-zh.md

Nacos 的一条注册请求会经历什么？

服务注册伪代码

https://github.com/alibaba/nacos/blob/595f1d40fafae952a8fd29d6e77460e74abb82cc/example/src/main/java/com/alibaba/nacos/example/App.java

public class App {
    public static void main(String[] args) throws NacosException {
        Properties properties = new Properties();
        properties.setProperty("serverAddr", "localhost:8848");
        properties.setProperty("namespace", "quickStart");
        NamingService naming = NamingFactory.createNamingService(properties);

        naming.registerInstance("nacos.test.3", "11.11.11.11", 8888, "TEST1");
        System.out.println("[Instances after register]  " + naming.getAllInstances("nacos.test.3", Lists.newArrayList("TEST1")));

        naming.registerInstance("nacos.test.3", "2.2.2.2", 9999, "DEFAULT");
        System.out.println("[Instances after register]  " + naming.getAllInstances("nacos.test.3", Lists.newArrayList("DEFAULT")));
    }
}

实际使用

https://github.com/alibaba/spring-cloud-alibaba.git

由客户端获取自身IP+端口注册到服务端 NacosDiscoveryClientAutoConfiguration

NacosAutoServiceRegistration 或者 NacosServiceRegistryAutoConfiguration

https://github.com/alibaba/spring-cloud-alibaba/blob/2023.x/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-nacos-discovery/src/main/java/com/alibaba/cloud/nacos/registry/NacosServiceRegistryAutoConfiguration.java

获取service端数据

Nacos Config 数据结构

Nacos Config 主要通过 dataId 和 group 来唯一确定一条配置，假定您已经了解此背景。如果不了解，请参考 Nacos 文档。

Nacos Client 从 Nacos Server 端获取数据时，调用的是此接口 ConfigService.getConfig(String dataId, String group, long timeoutMs)。