> 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" %} <mark style="color:blue;">**注意**</mark>

<mark style="color:blue;">URL 刷新和目录刷新每天分别限制为 500 次和 50 次。</mark>
{% endhint %}

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