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TCP、HTTP的深入思考
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<time title="创建时间：2020-10-12 18:00:39" itemprop="dateCreated datePublished" datetime="2020-10-12T18:00:39+08:00">2020-10-12</time>
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<time title="修改时间：2020-10-13 16:50:18" itemprop="dateModified" datetime="2020-10-13T16:50:18+08:00">2020-10-13</time>
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<h4 id="问题"><a href="#问题" class="headerlink" title="问题"></a>问题</h4><ol>
<li>TCP上传大文件是如何缓存数据的？当TCP缓存区满时是如何处理的？（滑动窗口）</li>
<li>TCP连接和Socket之间的关系是什么啊？</li>
<li>TCP连接保持keepalive时，http1.1请求如何区分进行区分？</li>
</ol>
<h4 id="参考资料"><a href="#参考资料" class="headerlink" title="参考资料"></a>参考资料</h4><p><a href="https://www.cnblogs.com/ShaYeBlog/p/9289711.html" target="_blank" rel="noopener">网络通信socket连接数上限</a> </p>
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第一份工作总结
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<time title="创建时间：2020-10-06 11:07:54" itemprop="dateCreated datePublished" datetime="2020-10-06T11:07:54+08:00">2020-10-06</time>
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<time title="修改时间：2020-10-12 17:59:29" itemprop="dateModified" datetime="2020-10-12T17:59:29+08:00">2020-10-12</time>
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<p><a href="https://github.com/drgonroot/drgonroot.github.io/issues/new" target="_blank" rel="noopener">吐槽、建议、解惑入口网址</a></p>
<h4 id="简介"><a href="#简介" class="headerlink" title="简介"></a>简介</h4><p>  2017-09 ~ 2020-08这段时间，是我的第一份工作。这一份工作是从大四实习开始至毕业后两年。在这里，认识好多优秀领导和优秀同事。因此这篇文章希望自己能够向这些优秀领导和优秀同事学习。同时，还想讲讲自己在这段时间锻炼与错误。</p>
<h4 id="正文"><a href="#正文" class="headerlink" title="正文"></a>正文</h4><p>  </p>
<h4 id="优秀领导"><a href="#优秀领导" class="headerlink" title="优秀领导"></a>优秀领导</h4><p>  </p>
<h4 id="优秀同事"><a href="#优秀同事" class="headerlink" title="优秀同事"></a>优秀同事</h4><h4 id="锻炼与成长"><a href="#锻炼与成长" class="headerlink" title="锻炼与成长"></a>锻炼与成长</h4><h4 id="过失与错误"><a href="#过失与错误" class="headerlink" title="过失与错误"></a>过失与错误</h4><h4 id="总结"><a href="#总结" class="headerlink" title="总结"></a>总结</h4>
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深入密码学习
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<p><a href="https://github.com/drgonroot/drgonroot.github.io/issues/new" target="_blank" rel="noopener">吐槽、建议、解惑入口网址</a></p>
<h3 id="密码"><a href="#密码" class="headerlink" title="密码"></a>密码</h3><blockquote>
<p>作者研读《图解密码技术-第三版》的学习总结</p>
</blockquote>
<p>图表面对不同场景应运而生技术</p>
<table>
<thead>
<tr>
<th>信息安全所面对威胁</th>
<th>受威胁的特性</th>
<th>用来应对技术</th>
</tr>
</thead>
<tbody><tr>
<td>窃听(秘密泄露)</td>
<td>机密性</td>
<td>对称密码、公钥密码即非对称密码</td>
</tr>
<tr>
<td>篡改(信息被修改)</td>
<td>完整性</td>
<td>单项散列函数、消息认证码、数字签名</td>
</tr>
<tr>
<td>伪装(伪装成真正的发送者)</td>
<td>认证</td>
<td>消息认证码、数字签名</td>
</tr>
<tr>
<td>否认(事后称自己没有做)</td>
<td>不可否认性</td>
<td>数字签名</td>
</tr>
</tbody></table>
<h4 id="对称密码-共享密钥密码"><a href="#对称密码-共享密钥密码" class="headerlink" title="对称密码/共享密钥密码"></a>对称密码/共享密钥密码</h4><blockquote>
<p>算法涵盖：比特异或运算，XOR<br><strong>用相同的密钥进行加密和解密</strong><br><strong>对称密码是通过将明文转换为复杂的形式来保证其机密性。</strong> </p>
</blockquote>
<p><strong>分组密码</strong><br>  分组密码是每次只能处理特定长度的一块明文数据的一类密码算法，这里的“一块”就是<code>分组(block)</code>。此外一个分组的比特数称为<code>分组长度（block length）</code>。</p>
<h5 id="DES-2000年前被破译，可以废弃"><a href="#DES-2000年前被破译，可以废弃" class="headerlink" title="DES [2000年前被破译，可以废弃]"></a>DES [2000年前被破译，可以废弃]</h5><p>  DES（Data Encryption Standard）是1977年美国联邦信息处理标准（FIPS）中采用的一种对称密码，也是分组密码，分组长度为64比特，密码算法一次只能加密64比特的明文，并生成64比特的密文。如果要加密的明文比较长，则需要使用DES加密算法反复迭代加密明文。DES的密钥长度是64比特，但由于每隔7比特会设置一个用于错误检查的比特，因此实质上其密钥长度为56比特。</p>
<p>  后续DES破译后，出现了三重DES(triple-DES，DES-EDE3, 3DES)。三重DES是为了增加DES的强度，将DES重复3次所得到一种密码算法。</p>
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互联网项目管理实践精粹（一）
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<p><a href="https://github.com/drgonroot/drgonroot.github.io/issues/new" target="_blank" rel="noopener">吐槽、建议、解惑入口网址</a></p>
<h3 id="项目经理"><a href="#项目经理" class="headerlink" title="项目经理"></a>项目经理</h3><blockquote>
<p>项目经理角色是组织战略与项目团队之间联系的纽带，也是确保项目团队工作价值并对项目结果负责和主要负责人。</p>
</blockquote>
<h4 id="核心责任"><a href="#核心责任" class="headerlink" title="核心责任"></a>核心责任</h4><ul>
<li><p>管理维护项目待办事项列表，确保项目团队明晰列表内容及产品需求优先级；</p>
</li>
<li><p>指导和引导项目团队按照标准制度流程，高效地进行项目设计、开发与实现；</p>
</li>
<li><p>多项目的全程项目生命周期管理，确保项目团队各成员了解的信息真实对等；</p>
</li>
<li><p>整合协调公司内外部项目资源，扫清障碍、打通经脉，高效地推动推动项目落地；</p>
</li>
<li><p>参与组织级项目管理体系建设，提升项目管理能力，激发项目团队工作热情；</p>
</li>
<li><p>合理安排项目资源，制订并执行项目计划，管理项目从立项到上线的全部过程；</p>
</li>
<li><p>及时发现项目中可能存在的风险并提前预警，制订项目风险应对和应急方案；</p>
</li>
<li><p>与各职能部门高效沟通，快速推动项目问题和难点的解决，并定期总结汇报；</p>
</li>
<li><p>研究并推广应用先进的互联网项目管理工具，促进项目管理信息化和自动化。</p>
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