How do you structure a large Flask application for scalability and maintainability?
Instruction: Discuss your approach or strategy for structuring a large Flask application.
Context: This question assesses the candidate's ability to organize and structure a Flask application in a way that supports growth, scalability, and easy maintenance.
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Organize code around cohesive features, with an application factory for configuration and registration. Keep routes focused on HTTP concerns and move reusable business operations into ordinary modules that can be tested without manufacturing a request.
Blueprints help group routes, templates and hooks. They are registered inside one Flask application and are not automatically separate deployable services...