Question 1

How do I deploy Flask to production?

Accepted Answer

Never use the Flask development server in production. Instead, use Gunicorn as the WSGI server with Nginx as a reverse proxy. Run "gunicorn -w 4 -b 127.0.0.1:8000 app:app" and configure Nginx to proxy requests. Use systemd to manage the process.

Question 2

What's the best way to structure Flask for deployment?

Accepted Answer

Use the application factory pattern with create_app(). Store configuration in environment variables, use a requirements.txt or pyproject.toml for dependencies, and separate development/production configs. This makes deployment straightforward and secure.

Question 3

How do I serve static files in Flask production?

Accepted Answer

In production, serve static files through Nginx rather than Flask for better performance. Configure Nginx with an alias directive pointing to your static folder. This offloads static file serving from your Python application.

Question 4

What resources does Flask need on a VPS?

Accepted Answer

Flask is very lightweight. A 512MB-1GB RAM VPS can handle small to medium Flask APIs. The actual requirements depend on your application logic and traffic. Use Gunicorn workers to scale - typically 2-4 workers per CPU core.

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