Question 1

How to set up JWT authentication in FastAPI?

Accepted Answer

FastAPI has built-in OAuth2 support with JWT tokens; use the Security dependency and OAuth2PasswordBearer for token validation. The documentation provides step-by-step tutorials for implementing secure auth flows.

Question 2

FastAPI vs Django REST Framework for APIs?

Accepted Answer

FastAPI is faster and has automatic docs, ideal for async, high-performance APIs. Django REST Framework offers more built-in features like serializers and a larger ecosystem but is slower and synchronous.

Question 3

Can FastAPI handle WebSockets?

Accepted Answer

Yes, FastAPI supports WebSockets through Starlette integration. You can define WebSocket endpoints similarly to HTTP routes, making it suitable for real-time applications.

Question 4

How to deploy FastAPI on AWS or Kubernetes?

Accepted Answer

Deploy using ASGI servers like Uvicorn with Gunicorn in containers. The README mentions cloud providers, and community guides detail Docker setups and scaling configurations.

Question 5

Is FastAPI good for microservices architecture?

Accepted Answer

Absolutely, its performance, automatic docs, and type safety make it excellent for microservices. However, ensure your team is comfortable with async patterns for distributed systems.

Question 6

How to add custom middleware in FastAPI?

Accepted Answer

Use Starlette's middleware system; FastAPI allows adding middleware for tasks like logging or CORS by wrapping the app. Examples in the docs show how to implement request/response interceptors.

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