> For the complete documentation index, see [llms.txt](https://docs.postgresql.tw/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.postgresql.tw/13/the-sql-language/performance-tips.md).

# 14. 效能技巧

查詢效能可能會受到很多因素的影響。其中一些可以由使用者控制，而另一些則是系統底層設計的基礎。本章提供了關於理解和調整 PostgreSQL 效能的一些提示。


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