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KB941801 Updated 1 year ago
cdn cache purge

Clearing Content from the CDN Cache

This guide describes how to delete incorrect or accidentally published content from the CDN cache.

Caching enables particularly fast delivery of content to your website visitors. If content has been accidentally declared as cacheable or contains an error, you can remove it from the cache as follows.

Check if Content is Delivered from Cache

Use the following request to check if content is delivered from the cache:

Linux:

curl -I https://www.mywebsite.com/media/image/product/spaceeggs.png

Windows (PowerShell >= v3):

Invoke-WebRequest -Method HEAD -Uri https://www.mywebsite.com/media/image/product/spaceeggs.png

Windows (PowerShell):

$r = [System.Net.WebRequest]::Create('https://www.mywebsite.com/media/image/product/spaceeggs.png')
$r.Method = "HEAD"
$r.GetResponse().Headers['X-IDNT-Cache']

The following values of the X-IDNT-Cache header indicate whether the request was answered from the cache:

  • HIT: The request was answered from the cache
  • MISS: The request was not answered from the cache

Remove Content from Cache

If the request is answered from the cache, you can remove the content with the following request:

Linux:

curl -X PURGE https://www.mywebsite.com/media/image/product/spaceeggs.png

Windows (PowerShell):

$r = [System.Net.WebRequest]::Create('https://www.mywebsite.com/media/image/product/spaceeggs.png')
$r.Method = "PURGE"
$r.GetResponse().StatusCode.value___

If the content was successfully removed, you will receive a response with HTTP Status 204 (No Content). If the content was not found in the cache, you will receive a response with HTTP Status 412 (Precondition failed).