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I configured azure metric alert when there is a dead-lettered message in a specific topic.

The dead-lettered queue only has one message but I discovered that when using Average, it is not always remain as absolute number (1) sometime it shows as 0.8 or 1.2 enter image description here

And when I used Maximum, it shows as 2 messages in the dead-lettered queue (sometime fluctuate to 1). enter image description here

Any idea how does Azure actually calculate the dead-lettered queue metrics?

Thanks

Henri
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1 Answers1

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It is expected behavior for average as it is calculated for a time period.

Calculating by segment might provide accurate results.

enter image description here

RithwikBojja
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