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        <title>死锁 - 标签 - 五岁博客</title>
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        <description>死锁 - 标签 - 五岁博客</description>
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    <title>Go 服务死锁卡死问题排查全过程</title>
    <link>https://fiveyoboy.com/articles/go-lru-deadlock-debug-real-bug/</link>
    <pubDate>Sat, 20 Jun 2026 00:00:00 &#43;0000</pubDate>
    <author>五岁博客</author>
    <guid>https://fiveyoboy.com/articles/go-lru-deadlock-debug-real-bug/</guid>
    <description><![CDATA[<p>线上一段跑了大半年的 Go 服务突然开始随机卡死，CPU 曲线纹丝不动，接口直接挂起。</p>
<p>最后定位下来，问题就一句话：<strong>锁还没放，就去调外部回调了</strong>。</p>
<p>下面把整个排查过程完整复盘一遍，包括最初的有 Bug 代码、死锁触发链路、修复思路和并发编码上要守住的几条底线。</p>]]></description>
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