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| <li class="toctree-l1"><a class="reference internal" href="../using-java-chassis-in-spring-boot/using-java-chassis-in-spring-boot.html">在Spring Boot中使用java chassis</a> |
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| <h1 id="_1">微服务系统架构</h1> |
| <h2 id="_2"><img alt="" src="architecture.png" />框架概述</h2> |
| <h2 id="_3"><strong>主要设计意图</strong></h2> |
| <p>1.编程模型和通信模型分离，不同的编程模型可以灵活组合不同的通信模型。应用开发者在开发阶段只关注接口开发，部署阶段灵活切换通信方式；支持legacy系统的切换，legacy系统只需要修改服务发布的配置文件（或者annotation），而不需要修改代码。</p> |
| <p>现阶段支持SpringMVC、JAX-RS和透明RPC三种开发方式。</p> |
| <p>2.内建API-first支持。通过契约规范化微服务开发，实现跨语言的通信，并支持配套的软件工具链（契约生成代码、代码生成契约等）开发，构建完整的开发生态。</p> |
| <p>3.定义了常用的微服务运行模型，将微服务从发现到交互过程中的各种容错手段都封装起来。该运行模型支持自定义和扩展。</p> |
| <h2 id="_4"><strong>模块说明</strong></h2> |
| <table> |
| <thead> |
| <tr> |
| <th align="left">类型</th> |
| <th align="left">artifact id</th> |
| <th align="left">是否可选</th> |
| <th align="left">功能说明</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td align="left">编程模型</td> |
| <td align="left">provider-pojo</td> |
| <td align="left">是</td> |
| <td align="left">提供RPC开发模式</td> |
| </tr> |
| <tr> |
| <td align="left">编程模型</td> |
| <td align="left">provider-jaxrs</td> |
| <td align="left">是</td> |
| <td align="left">提供JAX RS开发模式</td> |
| </tr> |
| <tr> |
| <td align="left">编程模型</td> |
| <td align="left">provider-springmvc</td> |
| <td align="left">是</td> |
| <td align="left">提供Spring MVC开发模式</td> |
| </tr> |
| <tr> |
| <td align="left">通信模型</td> |
| <td align="left">transport-rest-vertx</td> |
| <td align="left">是</td> |
| <td align="left">运行于HTTP之上的开发框架，不依赖WEB容器，应用打包为可执行jar</td> |
| </tr> |
| <tr> |
| <td align="left">通信模型</td> |
| <td align="left">transport-rest-servlet</td> |
| <td align="left">是</td> |
| <td align="left">运行于WEB容器的开发框架，应用打包为war包</td> |
| </tr> |
| <tr> |
| <td align="left">通信模型</td> |
| <td align="left">transport-highway</td> |
| <td align="left">是</td> |
| <td align="left">提供高性能的私有通信协议，仅用于java之间互通。</td> |
| </tr> |
| <tr> |
| <td align="left">运行模型</td> |
| <td align="left">handler-loadbalance</td> |
| <td align="left">是</td> |
| <td align="left">负载均衡模块。提供各种路由策略和配置方法。一般客户端使用。</td> |
| </tr> |
| <tr> |
| <td align="left">运行模型</td> |
| <td align="left">handler-bizkeeper</td> |
| <td align="left">是</td> |
| <td align="left">和服务治理相关的功能，比如隔离、熔断、容错。</td> |
| </tr> |
| <tr> |
| <td align="left">运行模型</td> |
| <td align="left">handler-tracing</td> |
| <td align="left">是</td> |
| <td align="left">调用链跟踪模块，对接监控系统，吐出打点数据。</td> |
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