I Built an Authentication System With Express.js, MongoDB, (Access/Refresh Tokens, Sessions, Rate Limiting & More)

Source: Dev.to

I recently finished building one of my most solid backend projects — a complete authentication system written in Express.js, powered by MongoDB, JWT, and a clean architecture design.

Features

• 🔐 Access + Refresh tokens with secure storage
• 🗂️ Session tracking in the database
• 🧹 Automatic session invalidation
• 🛡️ IP‑based rate limiting (5 attempts / 10 mins)
• 🧪 Validation middleware for all inputs
• ⚠️ Global ApiError system for consistent error formatting
• 🧱 Clean architecture with controllers, services, utils
• 🛠️ Multiple bug fixes + edge‑case handling
• 🚀 Focus on maintainability & production readiness

Repository

👉 GitHub Repo:

Feel free to star the repo or share it with other developers. If you have ideas for improvements or want a front‑end version, let me know!