How many workers should I use?

The general rule of thumb for Gunicorn is `(2 * CPU Cores) + 1`. So, for a 2-core server, you would run 5 workers. This ensures that if some workers are waiting on I/O (like a database query), the others are actively processing requests.

Do I need Nginx in front of Gunicorn?

Yes, it is highly recommended. Gunicorn is great at managing Python processes, but it is not built to defend against Denial of Service (DoS) attacks or serve static files. You put Nginx (or an AWS Load Balancer) in front of Gunicorn to handle SSL termination, buffering, and security routing.

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Tutorials

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Production Deployment

Learn how to prepare a FastAPI application for production. Master Gunicorn worker scaling, configure Cross-Origin Resource Sharing (CORS) middleware, and package your application using Docker.

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