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        <title>墨冊</title>
        <link>https://kylinyu.win/</link>
        <description>This is my cool site</description>
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    <title>你的強大就是你的自由 - 10 個摘要觀點</title>
    <link>https://kylinyu.win/5-insights-to-navigate-workplace-flexibly/</link>
    <pubDate>Sat, 12 Jul 2025 23:28:14 &#43;0800</pubDate>
    <author>Win Yu</author>
    <guid>https://kylinyu.win/5-insights-to-navigate-workplace-flexibly/</guid>
    <description><![CDATA[<div class="featured-image">
                <img src="/img/post/5-insights.jpg" referrerpolicy="no-referrer">
            </div>]]></description>
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    <title>MySQL Row Constructor Expression</title>
    <link>https://kylinyu.win/mysql-row-constructor/</link>
    <pubDate>Mon, 30 Jun 2025 10:39:24 &#43;0800</pubDate>
    <author>Win Yu</author>
    <guid>https://kylinyu.win/mysql-row-constructor/</guid>
    <description><![CDATA[<div class="featured-image">
                <img src="/img/post/mysql-rdbms.jpg" referrerpolicy="no-referrer">
            </div> MySQL/MariaDB 中，Row Constructor Expression 是一種語法，用於同時處理多個列的值。它可以用來進行多列比較、插入多行數據、或作為查詢條件，這種語法在特定場景下非常有用。]]></description>
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<item>
    <title>21 個與巔峰絕緣的壞習慣 - 小記</title>
    <link>https://kylinyu.win/21-behaviors/</link>
    <pubDate>Sat, 16 Mar 2024 11:10:46 &#43;0800</pubDate>
    <author>Win Yu</author>
    <guid>https://kylinyu.win/21-behaviors/</guid>
    <description><![CDATA[<div class="featured-image">
                <img src="/img/post/reading.png" referrerpolicy="no-referrer">
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<item>
    <title>MySQL DataType / Schema CheatSheet</title>
    <link>https://kylinyu.win/mysql-datatypes-schema-cheatsheet/</link>
    <pubDate>Mon, 12 Jun 2023 15:42:10 &#43;0800</pubDate>
    <author>Win Yu</author>
    <guid>https://kylinyu.win/mysql-datatypes-schema-cheatsheet/</guid>
    <description><![CDATA[<div class="featured-image">
                <img src="/img/post/mysql-datatype-cheatsheet.png" referrerpolicy="no-referrer">
            </div>MySQL Schema CheatSheet 以及開發設計考量特性]]></description>
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<item>
    <title>MySQL 字串(char/varchar) 欄位搜尋數字(integer)</title>
    <link>https://kylinyu.win/mysql-charvarchar-column-search-by-integer-type/</link>
    <pubDate>Thu, 14 Apr 2022 17:53:09 &#43;0800</pubDate>
    <author>Win Yu</author>
    <guid>https://kylinyu.win/mysql-charvarchar-column-search-by-integer-type/</guid>
    <description><![CDATA[<div class="featured-image">
                <img src="/img/post/mysql-rdbms.jpg" referrerpolicy="no-referrer">
            </div><p>某次的 Table Query 下了一個基本的數字 id 條件做查詢，結果異樣的慢</p>
<p>帶一下 profiling 的過程找問題 ..</p>]]></description>
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<item>
    <title>MySQL Index Cardinality 索引基數</title>
    <link>https://kylinyu.win/mysql-index-cardinality/</link>
    <pubDate>Fri, 17 Sep 2021 10:37:21 &#43;0800</pubDate>
    <author>Win Yu</author>
    <guid>https://kylinyu.win/mysql-index-cardinality/</guid>
    <description><![CDATA[<div class="featured-image">
                <img src="/img/post/mysql-index-cardinality.png" referrerpolicy="no-referrer">
            </div>什麼是 MySQL Index Cardinality 索引基數代表欄位中有不同值的數量，舉例: Primary Key 而言: Cardinality = 該表總資料數 某個欄位的 Unique Key: Cardinality = 該表總資料數 (因為欄位內確保沒有重複的值) 假]]></description>
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<item>
    <title>資料庫到底要不要做正規化</title>
    <link>https://kylinyu.win/table-normalize-or-denormalized/</link>
    <pubDate>Thu, 26 Aug 2021 14:01:30 &#43;0800</pubDate>
    <author>作者</author>
    <guid>https://kylinyu.win/table-normalize-or-denormalized/</guid>
    <description><![CDATA[<div class="featured-image">
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<p><strong>Normalize until it hurts, denormalize until it works.</strong></p>
</blockquote>
<p>資料庫的設計有個基本的作法是 - <a href="https://zh.wikipedia.org/zh-tw/%E6%95%B0%E6%8D%AE%E5%BA%93%E8%A7%84%E8%8C%83%E5%8C%96" target="_blank" rel="noopener noreffer ">正規化</a></p>]]></description>
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    <title>優雅導入 PHP CS_Sniffer 至 Legacy 專案</title>
    <link>https://kylinyu.win/introduce-php-linter-in-the-smooth-way/</link>
    <pubDate>Wed, 04 Aug 2021 15:30:07 &#43;0800</pubDate>
    <author>Win Yu</author>
    <guid>https://kylinyu.win/introduce-php-linter-in-the-smooth-way/</guid>
    <description><![CDATA[<div class="featured-image">
                <img src="/img/post/php.jpg" referrerpolicy="no-referrer">
            </div><p>導入工具限制常常會有機會聽到反對的聲音，因為害怕工具造成開發效能降低，雖然這是必然的&hellip;</p>]]></description>
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    <title>解密 PHP_CodeSniffer Configuration File</title>
    <link>https://kylinyu.win/reveal-php-cs-sniffer-config/</link>
    <pubDate>Wed, 04 Aug 2021 13:57:03 &#43;0800</pubDate>
    <author>Win Yu</author>
    <guid>https://kylinyu.win/reveal-php-cs-sniffer-config/</guid>
    <description><![CDATA[<div class="featured-image">
                <img src="/img/post/php.jpg" referrerpolicy="no-referrer">
            </div><p>上一篇做了 <a href="php-linter-formater/" rel="">PHP Linter 工具的分析</a>之後，選定 PHP_CodeSniffer 來做團隊的工具導入，但是制定專案的設定檔需要了解其細節。
本文會帶介紹如何自己定義 <a href="https://github.com/squizlabs/PHP_CodeSniffer/wiki/Advanced-Usage#using-a-default-configuration-file" target="_blank" rel="noopener noreffer ">PHP_CodeSniffer config file</a> 來適應團隊的開發文化跟規範。</p>]]></description>
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    <title>從 MVC 談後端作業流 (Backend HTTP Workflow)</title>
    <link>https://kylinyu.win/mvc-api-workflow/</link>
    <pubDate>Mon, 02 Aug 2021 10:25:39 &#43;0800</pubDate>
    <author>Win Yu</author>
    <guid>https://kylinyu.win/mvc-api-workflow/</guid>
    <description><![CDATA[<div class="featured-image">
                <img src="/img/post/backend-http-workflow/mvc-boundry.png" referrerpolicy="no-referrer">
            </div>最近回 Backend 領域看 Team 內的後端開發給予建議，雖然號稱在使用 MVC 框架但還是有分可維護跟不容易維護的差別。 我試著用後端的 HTTP LifeCycle 或者可以說是 HTTP Workflow 來解釋如何在]]></description>
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