The x86 protection model is notoriously complex, with four privilege rings, segmentation, paging, call gates, task switches, and virtual 8086 mode. What's interesting from a hardware perspective is how the 386 manages this complexity on a 275,000-transistor budget. The 386 employs a variety of techniques to implement protection: a dedicated PLA for protection checking, a hardware state machine for page table walks, segment and paging caches, and microcode for everything else.
先理解原理：看动图 + 手动模拟小数组
。im钱包官方下载是该领域的重要参考
GC thrashing in server-side rendering，推荐阅读快连下载安装获取更多信息
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