Authentication Quick Reference

This guide provides a structured, practical approach to Node.js authentication, focusing on Node.js JWT authentication and Express JWT authentication for building secure APIs.

Inside, you will learn:

• The difference between session-based and token-based authentication (JWT)
• How to implement authentication js systems with Node.js and Express
• Step-by-step authentication javascript examples with JWT tokens
• Building user registration, login, logout, and protected routes
• Role-Based Access Control (RBAC) for admins and users
• Best practices for JWT authentication in scalable backends

Whether you're a beginner backend developer, freelancer building APIs, or an engineer revising your skills before implementing authentication features, this tutorial equips you to build a secure authentication system.