Instruction: Propose an architecture for a Flask application that processes long-running tasks in the background without blocking the main application thread.
Context: This question assesses the candidate's expertise in designing Flask applications for asynchronous task processing, crucial for maintaining application responsiveness.
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Architecture Overview The core of this design is to offload the long-running tasks from the Flask application's main thread to a background worker. This setup ensures that the Flask app can continue serving web requests without being blocked by resource-intensive tasks.
Components Flask Application: The main web server responsible for handling user requests. It will receive tasks that need to be processed and forward them to a task queue. Message Queue: An intermediary holding the tasks to be processed. It acts as a buffer and manages the distribution of tasks to the worker(s). Redis or RabbitMQ are excellent choices for their robustness and ease of use. Background Worker: A separate process (or processes) that listens for tasks on the message queue, processes them as they arrive, and performs any necessary actions, such as updating a database or sending a notification once the...