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wentch
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6、启动进程本身的监听服务。 <br/>
</p>
<h3><a id="redkale_confxml" class="anchor" href="#" aria-hidden="true"><span class="octicon octicon-link"></span></a>RedKale 集中式与分布式</h3>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;通常一个系统会分为三层：接入层、业务层、数据层。对应到RedKale的组件是： Servlet、Service、Source。大部分系统提供的是HTTP服务，为了方便演示RedKale从集中式到分布式的变化，以一个简单的HTTP服务作为范例。<br/>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;假设一个极简单的公司内部论坛系统包含三个模块： <br/>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;用户模块 &nbsp;&nbsp;&nbsp;UserSerivice: &nbsp;&nbsp;&nbsp;&nbsp;提供用户注册、登录、更新资料等功能， UserServlet作为接入层。<br/>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;帖子模块 ForumSerivice: &nbsp;&nbsp;&nbsp;&nbsp;提供看帖、发帖、删帖等功能， ForumServlet作为接入层。<br/>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;通知模块 &nbsp;NotifySerivice: &nbsp;&nbsp;&nbsp;&nbsp;提供用户操作、回帖等消息通知功能， NotifyWebSocket是WebSocket的Servlet，作为接入层。 <br/>
</p>
<br/>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<b>1、单点部署</b></p>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;在早期用户量很少或者开发、调试环境中只需部署一个进程就可满足需求。 </p>
<p style="text-align: center;"><img src="images/distributeimg_1.png" alt=""/></p>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;如上图，所有模块的HttpServlet、Service与Source数据库操作全部署在一起。 application.xml作简单的配置即可:</p>
<div class="highlight"><pre><span class="nt">&lt;application</span> <span class="na">port=</span><span class="s">&quot;5050&quot;</span><span class="nt">&gt;</span>
<span class="nt">&lt;server</span> <span class="na">protocol=</span><span class="s">&quot;HTTP&quot;</span> <span class="na">port=</span><span class="s">&quot;6060&quot;</span> <span class="na">root=</span><span class="s">&quot;root&quot;</span><span class="nt">&gt;</span>
<span class="nt">&lt;services</span> <span class="na">autoload=</span><span class="s">&quot;true&quot;</span> <span class="nt">/&gt;</span>
<span class="nt">&lt;servlets</span> <span class="na">autoload=</span><span class="s">&quot;true&quot;</span><span class="nt">/&gt;</span>
<span class="nt">&lt;/server&gt;</span>
<span class="nt">&lt;/application&gt;</span>
</pre></div>
<br/>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<b>2、多点部署</b></p>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;在生产环境需要避免单点问题，一个服务一般会部署多套。在此做个简单的容灾部署，最前端部署一个nginx作反向代理和负载均衡服务器，后面部署两套系统。 </p>
<p style="text-align: center;"><img src="images/distributeimg_2.png" alt=""/></p>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;如上图，两个进程间的Serivce都是本地模式，两者会通过SNCP服务保持数据同步，若DataSource开启了数据缓存也会自动同步。两套的配置文件相同，配置如下:</p>
<div class="highlight"><pre>
<span class="nt">&lt;application</span> <span class="na">port=</span><span class="s">&quot;5050&quot;</span><span class="nt">&gt;</span>
<span class="nt">&lt;resources&gt;</span>
<span class="nt">&lt;group</span> <span class="na">name=</span><span class="s">&quot;ALL&quot;</span><span class="nt">&gt;</span>
<span class="nt">&lt;node</span> <span class="na">addr=</span><span class="s">&quot;192.168.50.110&quot;</span> <span class="na">port=</span><span class="s">&quot;7070&quot;</span><span class="nt">/&gt;</span>
<span class="nt">&lt;node</span> <span class="na">addr=</span><span class="s">&quot;192.168.50.120&quot;</span> <span class="na">port=</span><span class="s">&quot;7070&quot;</span><span class="nt">/&gt;</span>
<span class="nt">&lt;/group&gt;</span>
<span class="nt">&lt;/resources&gt;</span>
<span class="c">&lt;!-- HTTP 监听 Server --&gt;</span>
<span class="nt">&lt;server</span> <span class="na">protocol=</span><span class="s">&quot;HTTP&quot;</span> <span class="na">port=</span><span class="s">&quot;6060&quot;</span> <span class="na">root=</span><span class="s">&quot;root&quot;</span><span class="nt">&gt;</span>
<span class="c">&lt;!-- 前端配置了nginx，需要配置才能获取客户端真实的IP地址 --&gt;</span>
<span class="nt">&lt;request&gt;</span>
<span class="nt">&lt;remoteaddr</span> <span class="na">value=</span><span class="s">&quot;request.headers.X-RemoteAddress&quot;</span><span class="nt">/&gt;</span>
<span class="nt">&lt;/request&gt;</span>
<span class="nt">&lt;services</span> <span class="na">autoload=</span><span class="s">&quot;true&quot;</span> <b><span class="na">groups=</span><span class="s">&quot;ALL&quot;</span></b><span class="nt">/&gt;</span>
<span class="nt">&lt;servlets</span> <span class="na">autoload=</span><span class="s">&quot;true&quot;</span> <span class="nt">/&gt;</span>
<span class="nt">&lt;/server&gt;</span>
<span class="c">&lt;!-- SNCP 监听 Server --&gt;</span>
<span class="nt">&lt;server</span> <span class="na">protocol=</span><span class="s">&quot;SNCP&quot;</span> <span class="na">port=</span><span class="s">&quot;7070&quot;</span><span class="nt">&gt;</span>
<span class="nt">&lt;services</span> <span class="na">autoload=</span><span class="s">&quot;true&quot;</span> <b><span class="na">groups=</span><span class="s">&quot;ALL&quot;</span></b><span class="nt">/&gt;</span>
<span class="nt">&lt;/server&gt;</span>
<span class="nt">&lt;/application&gt;</span></pre></div>
<br/>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<b>3、分层部署</b></p>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;随着业务的复杂度增加，接入层与业务层混在一起会越来越难部署和维护，因此需要进行分层部署。 </p>
<p style="text-align: center;"><img src="images/distributeimg_3.png" alt=""/></p>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;如上图，对HttpServlet与Service进行了分离。每个接入层的Service都是远程模式，业务层只需提供SNCP供远程调用。</p>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;接入层中每个进程的配置相同，配置如下:</p>
<div class="highlight"><pre><span class="nt">&lt;application</span> <span class="na">port=</span><span class="s">&quot;5050&quot;</span><span class="nt">&gt;</span>
<span class="nt">&lt;resources&gt;</span>
<span class="nt">&lt;group</span> <span class="na">name=</span><span class="s">&quot;ALL&quot;</span><span class="nt">&gt;</span>
<span class="nt">&lt;node</span> <span class="na">addr=</span><span class="s">&quot;192.168.50.110&quot;</span> <span class="na">port=</span><span class="s">&quot;7070&quot;</span><span class="nt">/&gt;</span>
<span class="nt">&lt;node</span> <span class="na">addr=</span><span class="s">&quot;192.168.50.120&quot;</span> <span class="na">port=</span><span class="s">&quot;7070&quot;</span><span class="nt">/&gt;</span>
<span class="nt">&lt;/group&gt;</span>
<span class="nt">&lt;/resources&gt;</span>
<span class="c">&lt;!-- HTTP 监听 Server --&gt;</span>
<span class="nt">&lt;server</span> <span class="na">protocol=</span><span class="s">&quot;HTTP&quot;</span> <span class="na">port=</span><span class="s">&quot;6060&quot;</span> <span class="na">root=</span><span class="s">&quot;root&quot;</span><span class="nt">&gt;</span>
<span class="c">&lt;!-- 前端配置了nginx，需要配置才能获取客户端真实的IP地址 --&gt;</span>
<span class="nt">&lt;request&gt;</span>
<span class="nt">&lt;remoteaddr</span> <span class="na">value=</span><span class="s">&quot;request.headers.X-RemoteAddress&quot;</span><span class="nt">/&gt;</span>
<span class="nt">&lt;/request&gt;</span>
<span class="nt">&lt;services</span> <span class="na">autoload=</span><span class="s">&quot;true&quot;</span> <span class="na">groups=</span><span class="s">&quot;ALL&quot;</span><span class="nt">/&gt;</span>
<span class="nt">&lt;servlets</span> <span class="na">autoload=</span><span class="s">&quot;true&quot;</span> <span class="nt">/&gt;</span>
<span class="nt">&lt;/server&gt;</span>
<span class="nt">&lt;/application&gt;</span>
</pre></div>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;业务层中每个进程的配置相同，置如下:</p>
<div class="highlight"><pre><span class="nt">&lt;application</span> <span class="na">port=</span><span class="s">&quot;5050&quot;</span><span class="nt">&gt;</span>
<span class="nt">&lt;resources&gt;</span>
<span class="nt">&lt;group</span> <span class="na">name=</span><span class="s">&quot;ALL&quot;</span><span class="nt">&gt;</span>
<span class="nt">&lt;node</span> <span class="na">addr=</span><span class="s">&quot;192.168.50.110&quot;</span> <span class="na">port=</span><span class="s">&quot;7070&quot;</span><span class="nt">/&gt;</span>
<span class="nt">&lt;node</span> <span class="na">addr=</span><span class="s">&quot;192.168.50.120&quot;</span> <span class="na">port=</span><span class="s">&quot;7070&quot;</span><span class="nt">/&gt;</span>
<span class="nt">&lt;/group&gt;</span>
<span class="nt">&lt;/resources&gt;</span>
<span class="c">&lt;!-- SNCP 监听 Server --&gt;</span>
<span class="nt">&lt;server</span> <span class="na">protocol=</span><span class="s">&quot;SNCP&quot;</span> <span class="na">port=</span><span class="s">&quot;7070&quot;</span><span class="nt">&gt;</span>
<span class="nt">&lt;services</span> <span class="na">autoload=</span><span class="s">&quot;true&quot;</span> <span class="na">groups=</span><span class="s">&quot;ALL&quot;</span><span class="nt">/&gt;</span>
<span class="nt">&lt;/server&gt;</span>
<span class="nt">&lt;/application&gt;</span>
</pre></div>
<br/>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<b>4、微服务部署</b></p>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;在生产环境需要避免单点问题，一个服务一般会部署多套。在此做个简单的容灾部署，最前端部署一个nginx作反向代理和负载均衡服务器，后面部署两套系统。 </p>
<p style="text-align: center;"><img src="images/distributeimg_4.png" alt=""/></p>
<h3><a id="redkale_confxml" class="anchor" href="#" aria-hidden="true"><span class="octicon octicon-link"></span></a>appplication.xml 配置说明</h3>
<div class="highlight"><pre><span class="cp">&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;</span>
<span class="c">&lt;!-- </span>