

<feed xmlns="http://www.w3.org/2005/Atom">
  <id>/</id>
  <title>Chirpy</title>
  <subtitle>A minimal, responsive and feature-rich Jekyll theme for technical writing.</subtitle>
  <updated>2026-04-09T09:54:43+08:00</updated>
  <author>
    <name>your_full_name</name>
    <uri>/</uri>
  </author>
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  <link rel="alternate" type="text/html" hreflang="en"
    href="/"/>
  <generator uri="https://jekyllrb.com/" version="4.4.1">Jekyll</generator>
  <rights> © 2026 your_full_name </rights>
  <icon>/assets/img/favicons/favicon.ico</icon>
  <logo>/assets/img/favicons/favicon-96x96.png</logo>


  
  <entry>
    <title>复合索引可以覆盖查询条件，为什么优化器却要走全表扫描</title>
    <link href="/posts/%E5%A4%8D%E5%90%88%E7%B4%A2%E5%BC%95%E5%8F%AF%E4%BB%A5%E8%A6%86%E7%9B%96%E6%9F%A5%E8%AF%A2%E6%9D%A1%E4%BB%B6-%E4%B8%BA%E4%BB%80%E4%B9%88%E4%BC%98%E5%8C%96%E5%99%A8%E5%8D%B4%E8%A6%81%E8%B5%B0%E5%85%A8%E8%A1%A8%E6%89%AB%E6%8F%8F/" rel="alternate" type="text/html" title="复合索引可以覆盖查询条件，为什么优化器却要走全表扫描" />
    <published>2026-04-08T11:33:00+08:00</published>
  
    <updated>2026-04-08T11:33:00+08:00</updated>
  
    <id>/posts/%E5%A4%8D%E5%90%88%E7%B4%A2%E5%BC%95%E5%8F%AF%E4%BB%A5%E8%A6%86%E7%9B%96%E6%9F%A5%E8%AF%A2%E6%9D%A1%E4%BB%B6-%E4%B8%BA%E4%BB%80%E4%B9%88%E4%BC%98%E5%8C%96%E5%99%A8%E5%8D%B4%E8%A6%81%E8%B5%B0%E5%85%A8%E8%A1%A8%E6%89%AB%E6%8F%8F/</id>
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    <author>
      <name>cotes</name>
    </author>

  
    
    <category term="Database" />
    
    <category term="PostgreSQL" />
    
  

  <summary>分区表、数据严重倾斜个别分区，查询是该分区只走全表扫描</summary>

  </entry>

  
  <entry>
    <title>Customize the Favicon</title>
    <link href="/posts/customize-the-favicon/" rel="alternate" type="text/html" title="Customize the Favicon" />
    <published>2019-08-11T00:34:00+08:00</published>
  
    <updated>2019-08-11T00:34:00+08:00</updated>
  
    <id>/posts/customize-the-favicon/</id>
    <content type="text/html" src="/posts/customize-the-favicon/" />
    <author>
      <name>cotes</name>
    </author>

  
    
    <category term="Blogging" />
    
    <category term="Tutorial" />
    
  

  <summary>The favicons of Chirpy are placed in the directory assets/img/favicons/. You may want to replace them with your own. The following sections will guide you to create and replace the default favicons.  Generate the favicon  Prepare a square image (PNG, JPG, or SVG) with a size of 512x512 or more, and then go to the online tool Real Favicon Generator and click the button Pick your favicon image to...</summary>

  </entry>

  
  <entry>
    <title>Getting Started</title>
    <link href="/posts/getting-started/" rel="alternate" type="text/html" title="Getting Started" />
    <published>2019-08-09T20:55:00+08:00</published>
  
    <updated>2019-08-09T20:55:00+08:00</updated>
  
    <id>/posts/getting-started/</id>
    <content type="text/html" src="/posts/getting-started/" />
    <author>
      <name>cotes</name>
    </author>

  
    
    <category term="Blogging" />
    
    <category term="Tutorial" />
    
  

  <summary>Get started with Chirpy basics in this comprehensive overview. You will learn how to install, configure, and use your first Chirpy-based website, as well as deploy it to a web server.</summary>

  </entry>

  
  <entry>
    <title>Writing a New Post</title>
    <link href="/posts/write-a-new-post/" rel="alternate" type="text/html" title="Writing a New Post" />
    <published>2019-08-08T14:10:00+08:00</published>
  
    <updated>2019-08-08T14:10:00+08:00</updated>
  
    <id>/posts/write-a-new-post/</id>
    <content type="text/html" src="/posts/write-a-new-post/" />
    <author>
      <name>cotes</name>
    </author>

  
    
    <category term="Blogging" />
    
    <category term="Tutorial" />
    
  

  <summary>This tutorial will guide you on how to write a post in the Chirpy template, and it’s worth reading even if you’ve used Jekyll before, as many features require specific variables to be set.  Naming and Path  Create a new file named YYYY-MM-DD-TITLE.EXTENSION and put it in the _posts of the root directory. Please note that the EXTENSION must be one of md and markdown. If you want to save time of ...</summary>

  </entry>

  
  <entry>
    <title>Text and Typography</title>
    <link href="/posts/text-and-typography/" rel="alternate" type="text/html" title="Text and Typography" />
    <published>2019-08-08T11:33:00+08:00</published>
  
    <updated>2019-08-08T11:33:00+08:00</updated>
  
    <id>/posts/text-and-typography/</id>
    <content type="text/html" src="/posts/text-and-typography/" />
    <author>
      <name>cotes</name>
    </author>

  
    
    <category term="Blogging" />
    
    <category term="Demo" />
    
  

  <summary>Examples of text, typography, math equations, diagrams, flowcharts, pictures, videos, and more.</summary>

  </entry>

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