https://my-blog.j8465383071.workers.dev/tags/internals/Recent content in Internals on Kernel NotesHugo -- 0.147.7zh-cnFri, 11 Sep 2026 18:12:00 +0800https://my-blog.j8465383071.workers.dev/posts/postgresql/postgresinternal/Fri, 11 Sep 2026 15:06:30 +0800https://my-blog.j8465383071.workers.dev/posts/postgresql/postgresinternal/<h1 id="postgres-internals-14-阅读笔记">Postgres Internals 14 阅读笔记</h1> <p>Egor Rogov 的 <em>PostgreSQL 14 Internals</em> 读书笔记入口。中文在线版方便查阅，英文 PDF 方便离线精读。</p> <h2 id="资料">资料</h2> <ul> <li>中文在线版：<a href="https://postgres-internals.cn/docs/chapter01/">PostgreSQL 14 Internals（中文）</a></li> <li>英文 PDF（本站电子书库）：<a href="https://my-blog.j8465383071.workers.dev/ebooks/postgresql_internals-14_parts1-3_en.pdf">postgresql_internals-14_parts1-3_en.pdf</a></li> </ul> <figure class="pdf-embed"> <div class="pdf-embed__bar"> <span class="pdf-embed__title">PostgreSQL 14 Internals (EN, Parts 1–3)</span> <a class="pdf-embed__link" href="https://my-blog.j8465383071.workers.dev/ebooks/postgresql_internals-14_parts1-3_en.pdf" target="_blank" rel="noopener">新窗口打开</a> <a class="pdf-embed__link" href="https://my-blog.j8465383071.workers.dev/ebooks/postgresql_internals-14_parts1-3_en.pdf" download>下载</a> </div> <iframe class="pdf-embed__frame" src="https://my-blog.j8465383071.workers.dev/ebooks/postgresql_internals-14_parts1-3_en.pdf" title="PostgreSQL 14 Internals (EN, Parts 1–3)" height="720" loading="lazy" ></iframe> </figure> <hr> <h2 id="数据组织">数据组织</h2> <h3 id="数据库">数据库</h3> <p>当初始化一个 PG 实例之后，PGDATA 会自动创建以下三种基础数据库：</p> <ul> <li>template0: 用来通过逻辑复制，或创建不同编码数据库的原型/样板；</li> <li>template1: 用户在此实例下创建所有其他数据库的模版，新建库都基于它；</li> <li>postgres: 自带的一个常规库；</li> </ul> <p><img alt="image" loading="lazy" src="https://my-blog.j8465383071.workers.dev/images/uploads/image.png"></p>