Edge Security Acceleration:Purge cache by hostname

Use cases

• Purge all cached content across multiple hostnames of your site at once.

• Clear all cached content for a specific hostname.

Procedure

1. In the ESA console, select Websites. In the Website column, click the target site.

2. In the navigation pane, choose Caching > Purge Cache.

3. On the Purge Cache tab, configure the purge settings.

   • Type: Select By Hostname.

   • Purge Method: You can choose between two methods: Mark as Expired and Delete.

     Refresh method	Description
     Mark as Expired	Nodes are processed according to the following flow: The ESA POP sends an origin request with the If-Modified-Since and If-None-Match request headers. The origin server compares the file modification time. If the file is not modified, the origin server returns a 304 status code. The ESA POP can then use the existing cache file to respond to the client request. If the file is modified, the origin server returns a 200 status code and the latest file. The ESA POP returns the latest file to the client and caches the resource.
     Delete	If a user requests content that matches a resource to be refreshed, the ESA POP directly fetches the new resource from the origin, returns it to the user, and caches the new resource.

   • Purge Content: In the text box, enter the hostnames to purge. Separate multiple hostnames with a comma (,). Wildcards are not supported. For example:

     www.example.com,blog.example.com,shop.example.com

   

4. Click Submit.

5. Monitor the purge status.

   After you submit a purge task, track its progress on the Purge Records tab. 100% indicates completion. Large tasks may take longer.

Availability by edition