Azure Function Container App not Scaling down

Question

Hi all,

I am having a problem with one of my Azure Container App functions.

The function is subscribed to Service Bus Topics.

My problem is that the Function is not scaling to Zero despite not having any messages in the topics.

Any suggestions on what could be the issue?

Keith.

Answer 1

Hello Keith, Welcome to MS Q&A

Azure Container Apps can be scale to zero even when there are no messages in Service Bus Topics due to the configuration of the scaling rules.

In the context of using KEDA (Kubernetes-based Event Driven Autoscaling), ensure that the scaling rules are correctly defined, including the minReplicas setting. If this value is set to a number greater than zero, the application will maintain that many instances regardless of the message load.

Please check this for more details https://learn.microsoft.com/en-us/azure/container-apps/scale-app?pivots=azure-cli

Please let me know if any questions

Kindly accept answer if it helps

Thanks
Deepanshu

Answer 2

Hi Deepanshu,

Thanks for your reply .....

The minimum number of replicas is set to Zero (max set to 10).

Regards,

Keith