When you want to purge a Cloudlet's alternate response pages, use the Enhanced Content Control Utility (ECCU). The ECCU lets you specify how cached objects are refreshed.

To purge your alternate response pages:

• Set up an ECCU file containing the refresh instructions for the alternate response page.
• Upload the ECCU file using one of the following methods:
  • the Enhanced Content Control Utility (ECCU) section of Content Control Utility application, which is available from Control Center.
  • the ECCU Publisher web service.

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For detailed information about the ECCU, see the Purge Cache guide.

Set up an ECCU file

To purge your Cloudlet's alternate response page, you need to send a request with the following query string parameter: aka_static_purge.

In order for the ECCU to process that request, you need to set up an ECCU file for a query string purge where:

• the value of the aka_static_purge query string parameter is true.
• the URL to purge is either
  • the client URL sent in the request appended with the aka_static_purge query string parameter, or
  • the path to the alternate response, as defined in the Cloudlet behavior, appended with the aka_static_purge query string parameter.

For example: /path/alternateresponse.html?aka_static_purge=true.

Submit an ECCU request to purge branded pages

In Control Center, use ECCU to submit a request to purge branded pages. See the ECCU documentation for more details.

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You also have the option of using the ECCU Publisher web service.

1. Go to ☰ > CDN > Purge cache. The Fast Purge application opens. Under Purge content by, select Directory and Extensions (Advanced), then click Next.

2. Click New Request.

3. Enter a Request Name.

4. Select the Digital Properties.

5. Enter the Emails of users or administrators that you want to notify once the content is refreshed.

6. Select how you want to refresh your files:

   • Directory. Select this option if you want to refresh all files in a directory, including its subdirectories. The path must start with /. If you enter /by itself, ECCU refreshes all content for the digital properties you selected. For example, if the property uses a wildcard such as *.example.com, specifying a single / for the directory refreshes everything under test.example.com/, www2.example.com/, and nother.example.com/. Regular expressions and special characters are not supported in the Directory field.

   • ECCU File. Select this option if you want to upload an ECCU file that specifies what content to refresh. See Create the ECCU request file for more information.

7. Optionally, to refresh only specific kinds of files, specify the file extensions without a preceding ., such as gif, html, or jpg. Regular expressions and special characters are not supported.

8. Click Next. Review the details of the purge request and click Submit. The ECCU Request Confirmation page appears. It may take up to 30-40 minutes for the refresh request to complete.

   The metadata you see on the confirmation page is the ECCU file content.

9. Click OK to return to the Enhanced Content Control Utility page.