Azure function Eventgrid trigger + multiple events

Question

we have webhook subscription for blob create events to Azure function (eventgrid trigger), we noticed same event are received multiple time after random time interval. tried debugging locally using ngrok same behavior

What could be possible problems in this scenario

Thank you! Dyan

Have a look at this document learn.microsoft.com/en-us/azure/event-grid/delivery-and-retry Note, that the subscriber needs to return back a response within 30 seconds otherwise is follow up the retry policy. — Roman Kiss
– Roman Kiss, Commented Sep 21, 2022 at 12:51

RithwikBojja · Accepted Answer · 2022-09-22 06:45:35Z

1

In Event trigger if the message from end point is not received or any error occurred while triggering the event, Then it is triggered after some interval of time, so while creating the Event Trigger to function app you need to set the retry policy to 1 so that only once the event is triggered, this process worked for me, it might work for you too.

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Thanks to @Roman Kiss ,After sending a message, Event Grid waits 30 seconds for a response. If the endpoint has not answered after 30 seconds, the message is queued for retry. For event delivery, Event Grid employs an exponential backoff retry mechanism.

So try setting it 1 as above.

References taken from:

Azure Event Grid delivery and retry - Azure Event Grid | Microsoft Learn

answered Sep 22, 2022 at 6:45

RithwikBojja

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