> For the complete documentation index, see [llms.txt](https://docs.console.zenlayer.com/welcome/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.console.zenlayer.com/welcome/cn/content-delivery-network/purge-and-prefetch/purge.md).
# 刷新
输入要刷新的 URL 或目录：URL 或目录将被标记为已过期，当用户请求时，CDN 边缘节点将向上级节点或源站请求。
{% hint style="info" %} **注意**
URL 刷新和目录刷新每天分别限制为 500 次和 50 次。
{% endhint %}