We have an Azure AppGateway set up that routes traffic to 3 of our application nodes. Recently, the App Gateway has started encountering an issue where it just stops working after a few hours - everything was fine and then it just abruptly stops receiving/handling connections. Short of setting up a new App Gateway, nothing else seems to work to get around this to get the requests going again.
And when we do set up a new App Gateway, the problem re-surfaces after a few hours and its back to square one. We have a number of App Gateways setup and the problem seems to be unique to just this one Gateway. Any advice on how we can troubleshoot this to see what's going on and get that addressed?