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10-messagedriven.html
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<!DOCTYPE html><html lang="zh-CN"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width,height=device-height,initial-scale=1.0"><meta name="apple-mobile-web-app-capable" content="yes"><meta http-equiv="X-UA-Compatible" content="ie=edge"><meta property="og:type" content="website"><meta name="twitter:card" content="summary"><style>.bespoke-marp-note,.bespoke-marp-osc,.bespoke-progress-parent{display:none;transition:none}@media screen{body[data-bespoke-view=""] .bespoke-marp-parent>.bespoke-marp-osc>button,body[data-bespoke-view=next] .bespoke-marp-parent>.bespoke-marp-osc>button,body[data-bespoke-view=presenter] .bespoke-marp-presenter-container .bespoke-marp-presenter-info-container button{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-color:transparent;border:0;color:inherit;cursor:pointer;font-size:inherit;opacity:.8;outline:none;padding:0;transition:opacity .2s linear;-webkit-tap-highlight-color:transparent}body[data-bespoke-view=""] 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data-marpit-advanced-background-container="true" data-marpit-advanced-background-direction="horizontal"><figure style="background-image:url("images/architecture.svg");background-size:80%;"></figure></div></section></foreignObject><foreignObject width="70%" height="720"><section id="1" data-background-color="#fff" data-background-image="url('https://marp.app/assets/hero-background.jpg')" data-class="lead" data-theme="gaia" class="lead" style="--background-color:#fff;--background-image:url('https://marp.app/assets/hero-background.jpg');--class:lead;--theme:gaia;background-color:#fff;background-image:url('https://marp.app/assets/hero-background.jpg');background-position:center;background-repeat:no-repeat;background-size:cover;--marpit-advanced-background-split:30%;" data-marpit-advanced-background="content" data-marpit-advanced-background-split="right">
<h1>Software Architecture Explained</h1>
<h2>Message/Event-driven Architecture</h2>
</section>
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<h1>事件驱动</h1>
<p>生活中的“事件驱动”</p>
<ul>
<li>银行存款：更新余额/用户等级提升/贷款广告推送</li>
<li>信用卡消费：信用额度检查/风险控制/消费通知短信发送</li>
<li>航班延误：广播通知乘客/后续行程更新/酒店订单更新</li>
</ul>
</section>
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<h1>事件驱动架构</h1>
<p>Event-driven architecture (EDA) is a software architecture paradigm promoting the production, detection, consumption of, and reaction to events.</p>
<p><small>An event can be defined as "a significant change in state".For example, when a consumer purchases a car, the car's state changes from "for sale" to "sold". A car dealer's system architecture may treat this state change as an event whose occurrence can be made known to other applications within the architecture. </small></p>
<br />
<div style="text-align: right; font-size: 24px">https://en.wikipedia.org/wiki/Event-driven_architecture</div>
</section>
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<h1>事件驱动的GUI</h1>
<p><img src="images/10-event-driven-gui.png" alt="height:450px" style="height:450px;" /></p>
</section>
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<h1>事件驱动的调试器</h1>
<p><img src="images/10-event-driven-debugger.png" alt="height:450px" style="height:450px;" /></p>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;--marpit-advanced-background-split:50%;" data-marpit-advanced-background="background" data-marpit-advanced-background-split="right"><div data-marpit-advanced-background-container="true" data-marpit-advanced-background-direction="horizontal"><figure style="background-image:url("images/10-event-driven-debugger.png");background-size:90%;"></figure></div></section></foreignObject><foreignObject width="50%" height="720"><section id="6" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;--marpit-advanced-background-split:50%;" data-marpit-advanced-background="content" data-marpit-advanced-background-split="right">
<h1>反转控制关系</h1>
<p><img src="images/10-ioc.png" alt="height:350px" style="height:350px;" /></p>
<p>Hollywood Principle :"don't call us, we'll call you."</p>
</section>
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<h1>事件驱动架构</h1>
<br />
<p><img src="images/10-event-driven-architecture.png" alt="height:320px" style="height:320px;" /></p>
</section>
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<h1>Event：“a significant change in state”</h1>
<ul>
<li>Header: describing the event occurrence
<ul>
<li>Event type</li>
<li>Event name</li>
<li>Event timestamp</li>
<li>Event creator</li>
</ul>
</li>
<li>Body: describing what is happening
<ul>
<li>The cause of why the event was triggered</li>
<li>The information about the event for the interested parties</li>
</ul>
</li>
</ul>
</section>
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<h1>松耦合</h1>
<ul>
<li>An Event Emitter does not know the consumers of the event, it does not even know if a consumer exists, and in case it exists, it does not know how the event is used or further processed.</li>
<li>Sinks have the responsibility of applying a reaction as soon as an event is presented.</li>
<li>The knowledge of the correct distribution of events is exclusively present within the event channel. The physical implementation of event channels can be based on traditional components such as message-oriented middleware or point-to-point communication.</li>
</ul>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;--marpit-advanced-background-split:40%;" data-marpit-advanced-background="background" data-marpit-advanced-background-split="right"><div data-marpit-advanced-background-container="true" data-marpit-advanced-background-direction="horizontal"><figure style="background-image:url("images/10-awt.png");background-size:90%;"></figure></div></section></foreignObject><foreignObject width="60%" height="720"><section id="10" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;--marpit-advanced-background-split:40%;" data-marpit-advanced-background="content" data-marpit-advanced-background-split="right">
<h1>Java AWT</h1>
<ul>
<li>Event sources
<ul>
<li>Button, Scrollbar, etc</li>
</ul>
</li>
<li>Events
<ul>
<li>Mouse clicked/moved</li>
<li>Window resized/moved</li>
<li>Keyboard pressed/released</li>
</ul>
</li>
</ul>
</section>
</foreignObject><foreignObject width="1280" height="720" data-marpit-advanced-background="pseudo"><section style="" data-marpit-advanced-background="pseudo"></section></foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="11" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h1>AWT 事件处理模型</h1>
<ul>
<li>标准AWT Listener
<ul>
<li>ActionListener/AdjustmentListener/ComponentListener/…</li>
</ul>
</li>
<li>事件源在特定事件发生时会触发特定Listener的特定方法</li>
<li>用户对于事件的处理包括两个步骤
<ul>
<li>实现一个Listenser或继承一个Adapter</li>
<li>利用事件源提供的addXXXListener来将自己实现的事件处理与事件源可能产生的事件绑定起来</li>
</ul>
</li>
</ul>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="12" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h1>AWT 示例</h1>
<pre><code class="language-java"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap><span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">ClickReporter</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">Applet</span> </span>{
<span class="hljs-keyword">private</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">final</span> <span class="hljs-keyword">long</span> serialVersionUID = <span class="hljs-number">1L</span>;
<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">init</span><span class="hljs-params">()</span> </span>{
setBackground(Color.yellow);
addMouseListener(<span class="hljs-keyword">new</span> ClickListener());
}
<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">ClickListener</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">MouseAdapter</span> </span>{
<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">mousePressed</span><span class="hljs-params">(MouseEvent event)</span> </span>{
System.out.println(<span class="hljs-string">"Mouse pressed at ("</span> + event.getX() + <span class="hljs-string">","</span> + event.getY() + <span class="hljs-string">")"</span>);
}
}
}
</span></span></foreignObject></svg></code></pre>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="13" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h1>另一版本</h1>
<pre><code class="language-java"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap><span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">ClickReporter</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">Applet</span> <span class="hljs-keyword">implements</span> <span class="hljs-title">MouseListener</span> </span>{
<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">init</span><span class="hljs-params">()</span> </span>{
setBackground(Color.yellow);
addMouseListener(<span class="hljs-keyword">this</span>);
}
<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">mouseEntered</span><span class="hljs-params">(MouseEvent event)</span> </span>{ }
<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">mouseExited</span><span class="hljs-params">(MouseEvent event)</span> </span>{ }
<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">mouseReleased</span><span class="hljs-params">(MouseEvent event)</span> </span>{ }
<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">mouseClicked</span><span class="hljs-params">(MouseEvent event)</span> </span>{ }
<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">mousePressed</span><span class="hljs-params">(MouseEvent event)</span> </span>{
System.out.println(<span class="hljs-string">"Mouse pressed at ("</span> + event.getX() + <span class="hljs-string">","</span> + event.getY() + <span class="hljs-string">")"</span>);
}
}
</span></span></foreignObject></svg></code></pre>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="14" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h1>Java Swing</h1>
<pre><code class="language-java"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap><span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">FooPanel</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">JPanel</span> <span class="hljs-keyword">implements</span> <span class="hljs-title">ActionListener</span> </span>{
<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-title">FooPanel</span><span class="hljs-params">()</span> </span>{
<span class="hljs-keyword">super</span>();
JButton btn = <span class="hljs-keyword">new</span> JButton(<span class="hljs-string">"Click Me!"</span>);
btn.addActionListener(<span class="hljs-keyword">this</span>);
<span class="hljs-keyword">this</span>.add(btn);
}
<span class="hljs-meta">@Override</span>
<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">actionPerformed</span><span class="hljs-params">(ActionEvent ae)</span> </span>{
System.out.println(<span class="hljs-string">"Button has been clicked!"</span>);
}
}
</span></span></foreignObject></svg></code></pre>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="15" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h1>观察者模式</h1>
<p><img src="images/10-observer-pattern.png" alt="height:400px" style="height:400px;" /></p>
<br />
<div style="text-align: right; font-size: 24px">https://en.wikipedia.org/wiki/Observer_pattern</div>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="16" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h1>发布/订阅模式</h1>
<p><img src="images/10-pub-sub-pattern.png" alt="height:400px" style="height:400px;" /></p>
<br />
<div style="text-align: right; font-size: 24px">https://en.wikipedia.org/wiki/Publish%E2%80%93subscribe_pattern</div>
<div style="text-align: right; font-size: 24px">https://hackernoon.com/observer-vs-pub-sub-pattern-50d3b27f838c</div>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="17" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h1>Guava EventBus</h1>
<p><small><small><a href="https://www.bilibili.com/video/BV1Wa4y1477d?p=2">https://www.bilibili.com/video/BV1Wa4y1477d?p=2</a> 10:40</small></small></p>
<p>sa-spring/guava-eventbus</p>
<p><img src="images/10-guava-event.png" alt="height:300px" style="height:300px;" /></p>
<div style="text-align: right; font-size: 24px">Guava: Google Core Libraries for Java
https://github.com/google/guava</div>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="18" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h1>观察者 vs 发布/订阅</h1>
<p><img src="images/10-observer-vs-pubsub.png" alt="height:350px" style="height:350px;" /></p>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="19" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h1>Spring Events</h1>
<p>Event handling in the <code>ApplicationContext</code> is provided through the <code>ApplicationEvent</code> class and the <code>ApplicationListener</code> interface.</p>
<p>If a bean that implements the <code>ApplicationListener</code> interface is deployed into the context, every time an <code>ApplicationEvent</code> gets published to the <code>ApplicationContext</code>, that bean is notified.</p>
<p>Essentially, this is the standard <strong>Observer</strong> design pattern.</p>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="20" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h1>Standard Events</h1>
<ul>
<li><code>ContextRefreshedEvent</code></li>
<li><code>ContextStartedEvent</code></li>
<li><code>ContextStoppedEvent</code></li>
<li><code>ContextClosedEvent</code></li>
<li><code>RequestHandledEvent</code></li>
<li><code>ServletRequestHandledEvent</code></li>
</ul>
<div style="text-align: right; font-size: 24px">https://docs.spring.io/spring-framework/docs/current/spring-framework-reference/core.html#context-functionality-events</div>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="21" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h3>Example & Demo</h3>
<pre><code class="language-java"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap><span class="hljs-keyword">import</span> org.springframework.context.event.ContextRefreshedEvent;
<span class="hljs-keyword">import</span> org.springframework.context.event.ContextStartedEvent;
<span class="hljs-keyword">import</span> org.springframework.context.event.EventListener;
<span class="hljs-keyword">import</span> org.springframework.stereotype.Component;
<span class="hljs-meta">@Component</span>
<span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">MyBean</span> </span>{
<span class="hljs-meta">@EventListener({ContextStartedEvent.class, ContextRefreshedEvent.class})</span>
<span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">handleContextStart</span><span class="hljs-params">()</span> </span>{
System.out.print(<span class="hljs-string">"Application Context Started"</span>);
}
}
</span></span></foreignObject></svg></code></pre>
<p><small><small><a href="https://www.bilibili.com/video/BV1Wa4y1477d?p=3">https://www.bilibili.com/video/BV1Wa4y1477d?p=3</a> 3:50</small></small></p>
<div style="text-align: right;">sa-spring/spring-events</div>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="22" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h1>Asynchronous Listeners</h1>
<p><img src="images/10-async-listener.png" alt="height:350px" style="height:350px;" /></p>
<div style="text-align: right; font-size: 24px">https://docs.spring.io/spring-framework/docs/current/spring-framework-reference/core.html#context-functionality-events-async</div>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="23" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h1>Ordering Listeners</h1>
<p><img src="images/10-ordering-listener.png" alt="height:350px" style="height:350px;" /></p>
<div style="text-align: right; font-size: 24px">https://docs.spring.io/spring-framework/docs/current/spring-framework-reference/core.html#context-functionality-events-order</div>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;--marpit-advanced-background-split:25%;" data-marpit-advanced-background="background" data-marpit-advanced-background-split="right"><div data-marpit-advanced-background-container="true" data-marpit-advanced-background-direction="horizontal"><figure style="background-image:url("images/10-message-queue.png");background-size:90%;"></figure></div></section></foreignObject><foreignObject width="75%" height="720"><section id="24" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;--marpit-advanced-background-split:25%;" data-marpit-advanced-background="content" data-marpit-advanced-background-split="right">
<h1>Advance Event Channel</h1>
<p>Event channels are conduits in which events are transmitted from event emitters to event consumers. … The physical implementation of event channels can be based on traditional components such as <strong>message-oriented middleware</strong>…</p>
<br />
<div style="text-align: left; font-size: 30px">Message-oriented middleware (MOM) is software or hardware infrastructure supporting sending and receiving messages between distributed systems.</div>
<div style="text-align: right; font-size: 24px">https://en.wikipedia.org/wiki/Message-oriented_middleware</div>
</section>
</foreignObject><foreignObject width="1280" height="720" data-marpit-advanced-background="pseudo"><section style="" data-marpit-advanced-background="pseudo"></section></foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="25" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h1>Message-oriented middleware</h1>
<p><img src="images/10-mom.png" alt="height:400px" style="height:400px;" /></p>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;--marpit-advanced-background-split:60%;" data-marpit-advanced-background="background" data-marpit-advanced-background-split="right"><div data-marpit-advanced-background-container="true" data-marpit-advanced-background-direction="horizontal"><figure style="background-image:url("images/10-amqp.png");background-size:90%;"></figure></div></section></foreignObject><foreignObject width="40%" height="720"><section id="26" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;--marpit-advanced-background-split:60%;" data-marpit-advanced-background="content" data-marpit-advanced-background-split="right">
<h1>AMQP</h1>
<p>高级消息队列协议即Advanced Message Queuing Protocol是面向消息中间件提供的开放的应用层协议，其设计目标是对于消息的排序、路由、保持可靠性、保证安全性。</p>
<br />
<div style="text-align: right; font-size: 24px">https://www.amqp.org/</div>
</section>
</foreignObject><foreignObject width="1280" height="720" data-marpit-advanced-background="pseudo"><section style="" data-marpit-advanced-background="pseudo"></section></foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="27" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h1>RabbitMQ</h1>
<p><a href="https://www.rabbitmq.com/">https://www.rabbitmq.com/</a></p>
<p><img src="images/10-rabbitmq.png" alt="height:150px" style="height:150px;" /></p>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;--marpit-advanced-background-split:30%;" data-marpit-advanced-background="background" data-marpit-advanced-background-split="right"><div data-marpit-advanced-background-container="true" data-marpit-advanced-background-direction="horizontal"><figure style="background-image:url("images/10-rabbitmq-detail.png");background-size:90%;"></figure></div></section></foreignObject><foreignObject width="70%" height="720"><section id="28" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;--marpit-advanced-background-split:30%;" data-marpit-advanced-background="content" data-marpit-advanced-background-split="right">
<h1>RabbitMQ</h1>
<ol>
<li><small>The producer publishes a message to the exchange.</small></li>
<li><small>The exchange receives the message and is responsible for the routing of the message.</small></li>
<li><small>Binding must be set up between the queue and the exchange. Here we have bindings to two different queues which exchange routes the message into.</small></li>
<li><small>The messages stay in the queue until they are handled by a consumer.</small></li>
<li><small>The consumer handles the message.</small></li>
</ol>
</section>
</foreignObject><foreignObject width="1280" height="720" data-marpit-advanced-background="pseudo"><section style="" data-marpit-advanced-background="pseudo"></section></foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="29" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h1>Types of Exchanges</h1>
<p><img src="images/10-exchange-types.png" alt="height:450px" style="height:450px;" /></p>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="30" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h1>Types Explaination</h1>
<p><img src="images/10-exchange-detail.png" alt="height:450px" style="height:450px;" /></p>
</section>
</foreignObject></svg><svg data-marpit-svg="" viewBox="0 0 1280 720"><foreignObject width="1280" height="720"><section id="31" data-background-color="#fff" data-background-image="none" data-theme="gaia" style="--background-color:#fff;--background-image:none;--theme:gaia;background-color:#fff;background-image:none;background-position:center;background-repeat:no-repeat;background-size:cover;">
<h1>Spring AMQP</h1>
<ul>
<li>AMQP entities – we create entities with the <code>Message</code>, <code>Queue</code>, <code>Binding</code>, and <code>Exchanges</code> classes</li>
<li>Connection Management – we connect to our RabbitMQ broker by using a <code>CachingConnectionFactory</code></li>
<li>Message Publishing – we use a <code>RabbitTemplate</code> to send messages</li>
<li>Message Consumption – we use a <code>@RabbitListener</code> to read messages from a queue</li>
</ul>
</section>
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<h1>Spring AMQP Demo</h1>
<p><a href="https://www.bilibili.com/video/BV1Wa4y1477d?p=4">https://www.bilibili.com/video/BV1Wa4y1477d?p=4</a> 3:10</p>
<p>sa-spring/spring-amqp</p>
<pre><code class="language-bash"><svg data-marp-fitting="svg" data-marp-fitting-code><foreignObject><span data-marp-fitting-svg-content><span data-marp-fitting-svg-content-wrap>docker run -d -p 5672:5672 -p 15672:15672 --name my-rabbit rabbitmq:3-management
</span></span></foreignObject></svg></code></pre>
<p><a href="http://localhost:15672">http://localhost:15672</a></p>
</section>
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/*! *****************************************************************************
Copyright (c) Microsoft Corporation.
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
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