best practices for Azure Functions timeout when processing large messages from Azure Service Bus?
I'm attempting to set up I'm converting an old project and This might be a silly question, but I just started working with I've been banging my head against this for hours... I am using Azure Functions (v3) to process messages from Azure Service Bus queues. My function is triggered by messages that can be quite large (up to 1 MB). However, I keep running into a timeout scenario when processing these messages, especially when the function tries to handle multiple messages concurrently. The default timeout for the Azure Function is set to 5 minutes, and I notice that I often encounter the following behavior: ``` Host is shutting down. Terminating Function 'FunctionName' because it took longer than the allowed time. ``` I’ve tried increasing the timeout setting in the host.json for my function like this: ```json { "functionTimeout": "00:10:00" } ``` However, it seems like the actual execution time for the processing is still exceeding this limit under certain conditions. I am also using a Service Bus trigger with the following configuration in my function: ```csharp [FunctionName("ProcessQueueMessage")] public async Task Run([ServiceBus("myqueue", Connection = "ServiceBusConnection")] string myQueueItem, ILogger log) { log.LogInformation($"C# ServiceBus queue trigger function processed message: {myQueueItem}"); // Simulate some processing await Task.Delay(700000); // Simulating a long-running task } ``` In the above code, I simulate processing that takes around 11 minutes, which I understand exceeds the timeout limit. Is there an alternative approach I can take to process these large messages without hitting timeout issues? Should I consider splitting the messages into smaller chunks before sending them to the queue, or is there a way to configure the Azure Function to handle longer execution times more effectively? Any guidance or best practices would be greatly appreciated! This is part of a larger API I'm building. I'm on Ubuntu 20.04 using the latest version of Csharp. I'd be grateful for any help. This is happening in both development and production on Windows 11. What would be the recommended way to handle this? I'm using Csharp latest in this project. Am I missing something obvious? This is happening in both development and production on Debian. Could this be a known issue? I'm coming from a different tech stack and learning Csharp.