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class="container" id="main-content" tabindex="-1"><div class="post"><article class="post-block h-entry"><div class="post-meta p-author h-card visually-hidden"><img class="author-avatar u-photo" src="../favicon.png" alt="Cytrogen"><span class="p-name">Cytrogen</span><a class="u-url" href="https://cytrogen.icu">https://cytrogen.icu</a></div><a class="post-permalink u-url u-uid visually-hidden" href="https://cytrogen.icu/posts/ed32.html">永久链接</a><div class="p-summary visually-hidden"><p>近期在学习 IBM 全栈应用开发微学士课程，故此记录学习笔记。</p></div><div class="visually-hidden"><a class="p-category" href="../categories/%E7%BC%96%E7%A8%8B%E7%AC%94%E8%AE%B0/">编程笔记</a><a class="p-category" href="../tags/IBM/">IBM</a></div><h1 class="post-title p-name">IBM 全栈开发【13・下】：全栈应用程序开发者毕业设计</h1><div class="post-info"><time class="post-date dt-published" datetime="2024-07-08T03:54:00.000Z">7/7/2024</time><time class="dt-updated visually-hidden" datetime="2026-02-09T17:16:54.717Z"></time></div><div class="post-content e-content"><html><head></head><body><p>近期在学习 IBM 全栈应用开发微学士课程，故此记录学习笔记。</p>
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<h1 id="1-复习和考试准备"><a class="markdownIt-Anchor" href="#1-复习和考试准备"></a> 1. 复习和考试准备</h1>
<h2 id="11-云计算概述"><a class="markdownIt-Anchor" href="#11-云计算概述"></a> 1.1. 云计算概述</h2>
<h4 id="111-云计算简介"><a class="markdownIt-Anchor" href="#111-云计算简介"></a> 1.1.1. 云计算简介</h4>
<ul>
<li>云计算是指通过互联网按需提供计算资源，采取即用即付的方式。</li>
<li>资源在多个用户之间动态分配和重新分配，并根据用户的需求扩大或缩小规模。</li>
<li>云计算的起源可以追溯到 20 世纪 50 年代的大型机，虚拟化技术和管理程序是现代云计算出现的催化剂。</li>
<li>企业必须考虑自身的业务需求、投资可行性和风险承受能力，以制定云计算应用战略，在不造成业务中断或安全、合规性或性能问题的情况下实现预期效益。</li>
<li>云技术应用的增长速度超过预期。推动这一技术浪潮的是提供从基础设施到平台和软件服务等一系列服务的云服务提供商。我们这个时代的一些主要云提供商包括 AWS、阿里巴巴云、谷歌、IBM 和 Microsoft Azure。</li>
</ul>
<h4 id="112-云计算的商业案例"><a class="markdownIt-Anchor" href="#112-云计算的商业案例"></a> 1.1.2. 云计算的商业案例</h4>
<ul>
<li>无论企业规模大小，采用云技术都能使企业变得灵活、具有创新性和竞争力，并创造与众不同的客户体验。企业提出的问题不是他们是否应该迁移到云技术，而是他们应该采取什么战略迁移到云技术。</li>
<li>一些案例研究展示了企业通过采用云技术所产生的影响：
<ul>
<li>美国航空公司采用云技术，在整个企业内迅速为客户创造价值。</li>
<li>UBank 利用云平台服务为开发人员提供更多控制权，从而消除创新障碍。</li>
<li>Bitly 利用云基础设施提供的可扩展性，为其地理位置分散的企业客户提供低延迟交付。</li>
<li>ActivTrades 利用云计算提供的基础设施、存储、网络和安全服务，加快在线交易系统的执行，并向客户交付新功能。</li>
</ul>
</li>
</ul>
<h4 id="113-云技术加速了新兴技术的发展"><a class="markdownIt-Anchor" href="#113-云技术加速了新兴技术的发展"></a> 1.1.3. 云技术加速了新兴技术的发展</h4>
<ul>
<li>以云计算为动力的新兴技术正在颠覆现有的商业模式，为企业的发展、创新和为客户创造价值创造前所未有的机遇。</li>
<li>一些案例研究展示了云计算新兴技术的使用如何为全球数百万人创造价值：
<ul>
<li>利用云上的物联网打击南非偷猎濒危犀牛的行为。</li>
<li>美国网球协会利用云上人工智能为全球数百万球迷提供独特的数字体验。</li>
<li>云端区块链通过建立食品供应链的可追溯性和透明度，帮助农民减少浪费。</li>
<li>KONE 公司利用数据分析为城市基础设施提供预测性维护解决方案。</li>
</ul>
</li>
</ul>
<h2 id="12-云计算模式"><a class="markdownIt-Anchor" href="#12-云计算模式"></a> 1.2. 云计算模式</h2>
<h4 id="121-服务模式"><a class="markdownIt-Anchor" href="#121-服务模式"></a> 1.2.1. 服务模式</h4>
<ul>
<li>云计算使我们能够以服务的形式利用技术，以按需付费的模式利用远程资源。云计算主要有三种服务模式：基础设施即服务（LaaS）、平台即服务（PaaS）和软件即服务（SaaS）。
<ul>
<li>对于 IaaS，云提供商管理物理资源。</li>
<li>对于 PaaS，提供商管理平台基础设施。</li>
<li>在 SaaS 模式中，提供商托管并管理应用程序和数据。</li>
</ul>
</li>
<li>基础设施即服务是云计算的一种形式，通过网络以按需付费的方式向消费者提供基本的计算机、网络和存储资源。</li>
<li>云基础设施的主要组成部分包括：
<ul>
<li>物理数据中心</li>
<li>计算</li>
<li>网络</li>
<li>存储</li>
</ul>
</li>
<li>平台即服务是一种为客户提供完整平台的云计算模式： 硬件、软件和基础设施。</li>
<li>高度抽象、支持服务、运行时环境、快速部署机制和中间件功能是 PaaS 云的显著特征。</li>
<li>PaaS 的优势在于：
<ul>
<li>可扩展性</li>
<li>产品和服务更快上市</li>
<li>更大的灵活性和创新性</li>
</ul>
</li>
</ul>
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