Fallback storage account (or multiple storage accounts) for Azure CDN

Question

I can configure the Azure CDN against a single storage account presently. What I'm wondering is in the event of a disaster, where that particular region becomes unavailable (outages etc..). If I need to refresh the cache at that point I don't have any regional fallbacks. What is the correct way of supporting multiple storage accounts with the CDN?

One way that I can see it is the Traffic Manager. Traffic Manager receives the request and sends it to one of the X CDNs configured for X Storage Accounts based on performance. That way if one of the regions become unavailable, Traffic Manager should fallback to another one. This is an expensive solution though, so I'm looking for something where I can get one CDN and X Storage Accounts ideally and the CDN should handle the world-wide performance, along with a fallback region.

Answer 1

Here are the steps to configure AFD:

1. Create AFD from Portal.
2. Click on Front Door Designer. You will have 3 sections. First is Frontend which will be already configured. Then Baclkend Pools and Routing rules.
3. Click on Backend Pools and add a new backend pool. Select Storage as Host type and then pick your Primary Storage blob page and provide priority as 1.
4. Once that is done configure the Health probes. Then add your second Storage blob page and then provide priority as 2.
5. Configure Routing rules and make sure you have /* as matching pattern. Also you can enable caching in the rule and you can cache based on the query string. Moreover if have a dynamic page, then you can enable dynamic compression.

Once that is done, try accessing AFD URL and check how it works.

Here is the Public Documentation for your reference: https://learn.microsoft.com/en-us/azure/frontdoor/front-door-routing-methods