> For the complete documentation index, see [llms.txt](https://yaojun.gitbook.io/cppinterview/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://yaojun.gitbook.io/cppinterview/di-ceng-xi-tong.md).

# 底层系统

* 操作系统
* 数据库系统
* 分布式系统