Eventstreams Dropping Messages When Throughput Spikes Above 15k msg/min — How to Prevent Data Loss?

Hello, please start by checking the eventstream throughput settings on the Eventstream. Do you have it set appropriately?

Configure settings for a Fabric eventstream - Microsoft Fabric | Microsoft Learn

Hello SavioFerraz ,

The compute needed for ingestion by the Eventstream (and thus the Eventhouse ingestion too) with put pressure on the Fabric capacity. Check the capacity size too.

An Eventstream is a combination of EventHubs and Azure Stream Analytics.

Because you are ingesting serious amounts of messages, you need to think about the quotas that these services have (lime the Eventhub).

I expect you are using the custom source as input for the Eventstream.

As an alternative, you can chose to ingest the messages first via an EventHub and make the Eventstream a consumer of the Eventhub. This gives much more control over the endpoint like scaling and pauzing egress.

If this answer helps you, a thumbs-up or marking it as accepted answer is appreaciated.