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Azure Functions Tips and Tricks

Azure Function Python Version

When you get this error message in the function invocations:

azure-function-python-version.png

It means the python version was newer when deploying it from vscode. You need to change the version to 3.10 in azure portal Cloud Shell Azure Function - Power Partners Doc (pwrp.pro)

Timeout

The timeout of an azure function depends on the functionTimeout value in the host.json. It applies to all functions in a function app.

However, you can also set it from the Azure portal. Proceed like so:

  1. Remove the timeout configuration from host.json

  2. For your consumption function apps, add the following environment variable: AzureFunctionsJobHost__functionTimeout = 00:10:00

  3. For your premium function apps, add the following environment variable: AzureFunctionsJobHost__functionTimeout = 01:00:00

If you remove it from host.json, but do not add it to the environment variables, then the defaults apply. These are, depending on the service plan:

  1. Consumption Plan:

    • Default Timeout: 5 minutes
    • Maximum Timeout: 5 minutes (can be increased up to 10 minutes by setting the functionTimeout in the host.json file)

  2. Premium Plan:

    • Default Timeout: 30 minutes
    • Maximum Timeout: Unlimited (can be configured using the functionTimeout in the host.json file or the AzureFunctionsJobHost__functionTimeout application setting)

  3. Dedicated (App Service) Plan:

    • Default Timeout: Unlimited (no timeout by default)
    • Maximum Timeout: Unlimited (can be configured using the functionTimeout in the host.json file or the AzureFunctionsJobHost__functionTimeout application setting)