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本文深度剖析了 V8 JavaScript 引擎的垃圾回收 (Garbage Collection, GC) 机制。内容系统性地阐述了其基于“分代假说”的内存布局（新生代与老生代），详细拆解了 Minor GC (Scavenge) 和 Major GC (Mark-Sweep-Compact) 的工作流程，并探讨了现代 GC 项目 Orinoco 如何利用并行、增量和并发技术来最小化主线程的停顿时间。
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