Azure Storage Queue messages not being processed in a timely manner using .NET 6 Azure Functions
Quick question that's been bugging me - I'm experiencing a significant delay in processing messages from an Azure Storage Queue using an Azure Function written in .NET 6. I have set up a simple function that is triggered by a queue message, but despite having a relatively low message volume, it seems to take several minutes for the messages to be processed. The function is configured with the following bindings in the `function.json`: ```json { "bindings": [ { "name": "queueItem", "type": "queueTrigger", "direction": "in", "queueName": "myQueue", "connection": "AzureWebJobsStorage" } ] } ``` In my local development environment, the function processes messages almost instantly. However, when deployed to Azure, I'm seeing logs that indicate the function is triggered, but the execution starts much later than expected: ``` 2023-10-01T12:00:00.000Z Function started 2023-10-01T12:02:00.000Z Function completed ``` I have tried increasing the host configuration settings in `host.json`, especially `functionTimeout`, but it doesn't seem to help with reducing the processing delay. Here’s the relevant part of my `host.json`: ```json { "functionTimeout": "00:10:00" } ``` I also confirmed that the Azure Storage Account's performance tier is set to Standard. I suspect that the delay might be related to the way the Function App is scaling or if it is in a consumption plan. However, I couldn’t find explicit documentation mentioning such limitations that would lead to this kind of delay. Is there a known issue with function cold starts, or is there a better configuration I might be missing to improve the message processing time? Any insights would be greatly appreciated.