Azure Functions
An Azure service that provides an event-driven serverless compute platform.
5,351 questions
Is it possible for an Azure Function hosted in a Container App Environment to be "always on"?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(179.20000000000002, 88%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESB%3C/text%3E%3C/svg%3E)
Sam Best
20
Reputation points
I've done the following:
- Enabled a dedicated workload profile which the app is running on. This has minimum instance count set to 1.
- Set the minimum replicas to 1 for the Azure Function itself.
Still it seems to spin down to 0 and do a cold start. From my understanding, there is no flex consumption available with this hosting model, so I was hoping the dedicated workload profile would solve my problem.
Is there any way I can configure my Azure Function to always have an always-ready, running instance outside of something like a timer trigger keepalive?
{count} votes
-
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(176, 40%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EKA%3C/text%3E%3C/svg%3E)
Khadeer Ali 2,525 Reputation points Microsoft Vendor2025-01-22T13:10:17.12+00:00 Welcome to Microsoft Q&A Platform!
Thanks for reaching out your query on Azure Function hosted in a Container App Environment to be "always on".
Always On Setting: As per the document The Always On setting is available only on an App Service plan. On an App Service plan, the Functions runtime goes idle after a few minutes of inactivity. Enabling Always On ensures your function app runs correctly.For detailed information on triggers, scaling, and other considerations, please refer to the official documentation
https://learn.microsoft.com/en-us/azure/azure-functions/functions-container-apps-hosting#considerations-for-container-apps-hosting
I hope this helps! If you have any further questions or need additional assistance,Please feel free to ask! -
Khadeer Ali 2,525 Reputation points Microsoft Vendor
2025-01-23T10:33:14.4233333+00:00 Hi @Sam Best ,
I wanted to check in and see if my earlier response addressed your question. If you still need assistance or have additional questions, feel free to share more details, and I’d be happy to help!
-
Khadeer Ali 2,525 Reputation points Microsoft Vendor
2025-01-24T08:49:33.59+00:00 Just following up again to see if you were able to resolve the issue or if there's anything else I can assist you with. Let me know if you need further help
-
Sam Best 20 Reputation points
2025-01-24T14:35:03.8+00:00 Hi Khadeer, our issue actually ended up be unrelated to this. I did discover a dedicated workload that azure container environments can host apps in that seems to keep an instance alive, but we found a different workaround. I will mark as accepted if I can figure out how.Thanks for your assistance!
-
Khadeer Ali 2,525 Reputation points Microsoft Vendor
2025-01-24T14:39:03.6133333+00:00 Glad to hear you found a workaround! We appreciate you letting us know. We're happy the issue is resolved for you. Please let us know if you have any further questions.
Sign in to comment
Sign in to answer