https://axerzone.cn/tags/gc/Recent content in GC on Weiming's BlogHugo -- gohugo.iozh-cn© 2026 WeimingMon, 08 May 2023 00:00:00 +0000https://axerzone.cn/posts/jvm-gc/Mon, 08 May 2023 00:00:00 +0000https://axerzone.cn/posts/jvm-gc/<h1 class="relative group">JVM 垃圾回收看这篇就够了 <div id="jvm-垃圾回收看这篇就够了" 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="#jvm-%e5%9e%83%e5%9c%be%e5%9b%9e%e6%94%b6%e7%9c%8b%e8%bf%99%e7%af%87%e5%b0%b1%e5%a4%9f%e4%ba%86" aria-label="锚点">#</a> </span> </h1> <p>JVM 垃圾回收是面试八股文里的重头戏，也是我觉得最难啃的一块。概念多、算法多、收集器也多，第一次看的时候感觉脑子不够用。这篇把我学到的整理一下，尽量讲人话。</p> <p><figure><img class="my-0 rounded-md" loading="lazy" decoding="async" fetchpriority="low" alt="垃圾回收示意图" src="https://upload.wikimedia.org/wikipedia/commons/thumb/3/3c/Tracing-garbage-collection.svg/400px-Tracing-garbage-collection.svg.png" ></figure> </p> <h2 class="relative group">堆内存长什么样 <div id="堆内存长什么样" 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%a0%86%e5%86%85%e5%ad%98%e9%95%bf%e4%bb%80%e4%b9%88%e6%a0%b7" aria-label="锚点">#</a> </span> </h2> <p>JVM 的堆分两大块：新生代（Young Generation）和老年代（Old Generation）。</p>