https://my.elastic-code.com/zh/docs/redis/%E9%AB%98%E7%BA%A7/Recent content in 高级 on Elastic CodeHugo -- gohugo.iozh-cn© 2026 Elastic Codehttps://my.elastic-code.com/zh/docs/redis/%E9%AB%98%E7%BA%A7/%E5%93%A8%E5%85%B5/Mon, 01 Jan 0001 00:00:00 +0000https://my.elastic-code.com/zh/docs/redis/%E9%AB%98%E7%BA%A7/%E5%93%A8%E5%85%B5/https://my.elastic-code.com/zh/docs/redis/%E9%AB%98%E7%BA%A7/%E6%8C%81%E4%B9%85%E5%8C%96/Mon, 01 Jan 0001 00:00:00 +0000https://my.elastic-code.com/zh/docs/redis/%E9%AB%98%E7%BA%A7/%E6%8C%81%E4%B9%85%E5%8C%96/<h2 class="relative group">RDB <div id="rdb" 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="#rdb" aria-label="锚点">#</a> </span> </h2> <p>默认开启</p> <h3 class="relative group">什么时候触发？ <div id="什么时候触发" 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="#%e4%bb%80%e4%b9%88%e6%97%b6%e5%80%99%e8%a7%a6%e5%8f%91" aria-label="锚点">#</a> </span> </h3> <ol> <li>命令触发， save 、 bgsave、flushall</li> <li>通常在服务退出时会触发，调用 save</li> <li>周期函数检测达到策略阈值会触发，调用 bgsave</li> <li>主从全量复制发送 RDB 文件</li> </ol> <h3 class="relative group">策略默认阈值 <div id="策略默认阈值" 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="#%e7%ad%96%e7%95%a5%e9%bb%98%e8%ae%a4%e9%98%88%e5%80%bc" aria-label="锚点">#</a> </span> </h3> <div class="highlight-wrapper"><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-c" data-lang="c"><span style="display:flex;"><span>save <span style="color:#ae81ff">900</span> <span style="color:#ae81ff">1</span> <span style="color:#960050;background-color:#1e0010">#</span> <span style="color:#ae81ff">900</span><span style="color:#960050;background-color:#1e0010">秒（</span><span style="color:#ae81ff">15</span><span style="color:#960050;background-color:#1e0010">分钟）内至少有</span><span style="color:#ae81ff">1</span><span style="color:#960050;background-color:#1e0010">个键被修改时，触发一次持久化</span> </span></span><span style="display:flex;"><span>save <span style="color:#ae81ff">300</span> <span style="color:#ae81ff">10</span> <span style="color:#960050;background-color:#1e0010">#</span> <span style="color:#ae81ff">300</span><span style="color:#960050;background-color:#1e0010">秒（</span><span style="color:#ae81ff">5</span><span style="color:#960050;background-color:#1e0010">分钟）内至少有</span><span style="color:#ae81ff">10</span><span style="color:#960050;background-color:#1e0010">个键被修改时，触发一次持久化</span> </span></span><span style="display:flex;"><span>save <span style="color:#ae81ff">60</span> <span style="color:#ae81ff">10000</span> <span style="color:#960050;background-color:#1e0010">#</span> <span style="color:#ae81ff">60</span><span style="color:#960050;background-color:#1e0010">秒（</span><span style="color:#ae81ff">1</span><span style="color:#960050;background-color:#1e0010">分钟）内至少有</span><span style="color:#ae81ff">10000</span><span style="color:#960050;background-color:#1e0010">个键被修改时，触发一次持久化</span></span></span></code></pre></div></div> <h3 class="relative group">持久化过程 <div id="持久化过程" 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%8c%81%e4%b9%85%e5%8c%96%e8%bf%87%e7%a8%8b" aria-label="锚点">#</a> </span> </h3> <p>当周期函数检测达到策略阈值时，会 fork 一个子进程。 这个子进程通过<strong>复制页表</strong>的方式与主进程共享内存，并开始将数据写入到临时的 RDB 文件</p>https://my.elastic-code.com/zh/docs/redis/%E9%AB%98%E7%BA%A7/%E6%B7%98%E6%B1%B0%E7%AD%96%E7%95%A5/Mon, 01 Jan 0001 00:00:00 +0000https://my.elastic-code.com/zh/docs/redis/%E9%AB%98%E7%BA%A7/%E6%B7%98%E6%B1%B0%E7%AD%96%E7%95%A5/https://my.elastic-code.com/zh/docs/redis/%E9%AB%98%E7%BA%A7/%E9%9B%86%E7%BE%A4/Mon, 01 Jan 0001 00:00:00 +0000https://my.elastic-code.com/zh/docs/redis/%E9%AB%98%E7%BA%A7/%E9%9B%86%E7%BE%A4/<p>Redis 单机可做到 写几万、读几十万 的 TPS</p> <h2 class="relative group">部署、搭建、操作集群 <div id="部署搭建操作集群" 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="#%e9%83%a8%e7%bd%b2%e6%90%ad%e5%bb%ba%e6%93%8d%e4%bd%9c%e9%9b%86%e7%be%a4" aria-label="锚点">#</a> </span> </h2> <h2 class="relative group">如何访问 redis 集群？ <div id="如何访问-redis-集群" 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="#%e5%a6%82%e4%bd%95%e8%ae%bf%e9%97%ae-redis-%e9%9b%86%e7%be%a4" aria-label="锚点">#</a> </span> </h2> <p><figure><img class="my-0 rounded-md" loading="lazy" decoding="async" fetchpriority="auto" alt="" width="2044" height="396" src="https://my.elastic-code.com/zh/docs/redis/%E9%AB%98%E7%BA%A7/%E9%9B%86%E7%BE%A4/static/LXRVbXpjZod9GExl4YxcX3Prn4l_hu_564fa2ecde001287.png" srcset="https://my.elastic-code.com/zh/docs/redis/%E9%AB%98%E7%BA%A7/%E9%9B%86%E7%BE%A4/static/LXRVbXpjZod9GExl4YxcX3Prn4l_hu_564fa2ecde001287.png 800w, https://my.elastic-code.com/zh/docs/redis/%E9%AB%98%E7%BA%A7/%E9%9B%86%E7%BE%A4/static/LXRVbXpjZod9GExl4YxcX3Prn4l_hu_5f3ca0aa59bb455.png 1280w" sizes="(min-width: 768px) 50vw, 65vw" data-zoom-src="https://my.elastic-code.com/zh/docs/redis/%E9%AB%98%E7%BA%A7/%E9%9B%86%E7%BE%A4/static/LXRVbXpjZod9GExl4YxcX3Prn4l.png"></figure> </p>