https://axerzone.cn/categories/%E4%B8%AD%E9%97%B4%E4%BB%B6/Recent content in 中间件 on Weiming's BlogHugo -- gohugo.iozh-cn© 2026 WeimingWed, 10 Apr 2024 00:00:00 +0000https://axerzone.cn/posts/redis-distributed-lock/Wed, 10 Apr 2024 00:00:00 +0000https://axerzone.cn/posts/redis-distributed-lock/<h1 class="relative group">Redis 分布式锁踩坑记 <div id="redis-分布式锁踩坑记" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#redis-%e5%88%86%e5%b8%83%e5%bc%8f%e9%94%81%e8%b8%a9%e5%9d%91%e8%ae%b0" aria-label="锚点">#</a> </span> </h1> <p>分布式锁这个东西，面试必问，实际开发也经常用。我做课程项目的时候在这上面栽了好几个跟头，今天把踩过的坑总结一下。</p> <h2 class="relative group">最简单的实现：SETNX <div id="最简单的实现setnx" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e6%9c%80%e7%ae%80%e5%8d%95%e7%9a%84%e5%ae%9e%e7%8e%b0setnx" aria-label="锚点">#</a> </span> </h2> <p>分布式锁的核心思路很简单：大家抢同一个 key，谁抢到谁执行。</p>https://axerzone.cn/posts/redis-data-structures/Tue, 20 Feb 2024 00:00:00 +0000https://axerzone.cn/posts/redis-data-structures/<h1 class="relative group">Redis 五种数据结构，各有各的妙用 <div id="redis-五种数据结构各有各的妙用" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#redis-%e4%ba%94%e7%a7%8d%e6%95%b0%e6%8d%ae%e7%bb%93%e6%9e%84%e5%90%84%e6%9c%89%e5%90%84%e7%9a%84%e5%a6%99%e7%94%a8" aria-label="锚点">#</a> </span> </h1> <p>Redis 谁都用过吧？但我发现很多人（包括之前的我）用 Redis 就只会 <code>SET</code> 和 <code>GET</code>，把它当个 key-value 缓存使。其实 Redis 有五种基本数据结构，每种都有自己的应用场景，选对了效率翻倍，选错了可能还不如不用。</p> <h2 class="relative group">String——最简单但别小看它 <div id="string最简单但别小看它" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#string%e6%9c%80%e7%ae%80%e5%8d%95%e4%bd%86%e5%88%ab%e5%b0%8f%e7%9c%8b%e5%ae%83" aria-label="锚点">#</a> </span> </h2> <p>String 是最基础的数据类型。一个 key 对应一个 value，value 最大 512MB。</p>