Today, I encountered an intermittent issue with the Azure Notification Hub when sending push notifications to both Apple and Android devices. It seems that, at times, the push notification service is taking between 30 and 60 seconds to complete the request. Using the test send feature in Visual Studio, I noticed that about 60-70% of the time, the push notification works instantly. The rest of the time, either the request times out (60 seconds is the timeout by default) or takes upwards of 30 seconds to complete.
Is this a known issue? It started happening over the weekend, according to my logs. Additionally, there was a problem with the Hub service back in December and again in May which was resulting in all requests to the Hub timing out. Those issues were reported here:
https://docs.microsoft.com/en-us/answers/questions/178623/send-a-test-push-notification-error-code-gatewayti.html?childToView=391041#comment-391041
Thanks,
dsav