AZ-204 Certification Practice Question #257

Question

You need to resolve the capacity issue.
What should you do?

Accepted Answer

The capacity/delay issue occurs during busy periods because the Azure Function processes the list of uploaded files sequentially in a standard `foreach` loop starting at line PC09. Since the files reside in a File share (ruling out Blob triggers), and the time trigger runs a single invocation, traditional scale-out does not help distribute the files. Updating the loop to process these items in parallel (e.g., using `Parallel.ForEach` or `Task.WhenAll` for async tasks) allows multiple receipt files to be processed concurrently on the same compute instance, resolving the delay bottleneck. *(Note: If the updated AZ-204 exam presents "replace the solution with durable functions" as an option instead, that is the correct alternative choice).*

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