REST API Security with Rust, MongoDB, and OAuth2

In this tutorial, you built a secure REST API in Rust using Actix-web, MongoDB, and JWT-based authentication, along with optional OAuth2 support. You learned how to:

• Set up a Rust web project with Actix-web
• Connect to MongoDB and model user data
• Implement user registration and login with Argon2 password hashing
• Issue and verify JWTs for secure authentication
• Add route protection with JWT middleware
• Support token refresh and persist refresh tokens in MongoDB
• Extract user information from tokens for route-level logic
• Optionally expand with OAuth2 and your provider

This foundation gives you the flexibility and performance of Rust while ensuring a robust security model. From here, you can extend your API with role-based authorization, revoke refresh tokens on logout, and integrate third-party identity providers.

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Happy Coding!