Purge Azure CDN Endpoint

Due to updates to your web application, or to quickly update assets that contain incorrect information.Sometimes you may wish to purge cached content from all edge nodes and force them all to retrieve new updated assets. 

To handle aforementioned scenario the term we use to describe this technology is Purging.Purging particular asset on Azure CDN deletes the cached version of that asset from all Edge servers on the Azure CDN. For example, if you have updated an image, or have made changes to your CSS file. Purging Azure CDN asset prevents an old version of an asset from being delivered to your clients.

Microsoft wasn't supporting the conventional way of purging the content, which intern was really difficult for customer to achieve.Under past procedure you had to contact Microsoft Support and create a ticket to purge the edge servers.Say for an example you have hosted the videos on Azure CDN and because the process was so clumsy with support tickets to force a purge on servers around the world, people would rather uploaded a file with a new name and changed the web page to point to the new file.Or best They will go with Short TTL as an Alternative to Purge.

Using Azure Portal

The support has recently been made available to Azure ARM Portal-

• In the Azure Portal, browse to the CDN profile containing the endpoint you wish to purge.
• From the CDN profile blade, click the purge button.

• On the Purge blade, select the service address you wish to purge from the URL dropdown.

• Select what assets you wish to purge from the edge nodes. If you wish to clear all assets, click the Purge all checkbox. Otherwise, type the full path of each asset you wish to purge (e.g., /pictures/test.png) in the Path textbox.
• Click the Purge button.

Using PowerShell

Get-Command -Module AzureRM.Cdn 
To invoke the purge make use of Unpublish-AzureRmCdnEndpointContent
Unpublish-AzureRmCdnEndpointContent `  
    -ResourceGroupName $ResourceGroupName `
    -ProfileName $ProfileName `
    -EndpointName $EndpointName `
    -PurgeContent = '/*'

With endpoint object in hand
$endpoint = Get-AzureRmCdnEndpoint -ResourceGroupName $ResourceGroupName `
    -ResourceGroupName $ResourceGroupName `
    -ProfileName $ProfileName `
    -EndpointName $EndpointName

$endpoint | Unpublish-AzureRmCdnEndpointContent -PurgeContent = '/*'

Related Articles : Solutions In Azure: Azure CDN

Part 1: Azure CDN For Content Delivery

Part 2: Azure CDN For Content Delivery