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FastAPI JWT Authentication Service
A secure authentication and authorization service built with FastAPI, featuring JWT-based login, protected routes, and clean project structure.
Tech Stack
PythonFastAPIJWTDockerSQLModelPostgreSQL
Project Overview
This project demonstrates a production-ready approach to handling user authentication in modern backend systems.
Instead of relying on heavy frameworks, I built a lightweight, secure, and scalable auth microservice using FastAPI and JSON Web Tokens (JWT).
The system is designed to be easily pluggable into larger microservices architectures, handling identity verification so other services don't have to.
It follows best practices for security, including password hashing with Bcrypt, access token expiration, and refresh token rotation.
Technical Challenges
- Implementing secure token refresh mechanisms without compromising UX.
- Ensuring proper separation of concerns between data models and Pydantic schemas.
- Handling database migrations cleanly using Alembic in a Dockerized environment.
Key Features
- Secure User Registration & Login with validation
- JWT Access & Refresh Token workflow
- Password Hashing using Bcrypt
- Dependency Injection for database sessions and current user retrieval
- Modular project structure (Routers, Schemas, Models, CRUD)
- Dockerized environment for easy deployment