Authentication from Scratch | JWT, Refresh Tokens & Secure Middleware Setup | Role based access

🚀 In this complete tutorial, we build a Production-Ready Authentication System from scratch. You will learn how to implement: ✔ Send OTP API ✔ User Signup API ✔ Login API ✔ JWT Access Token ✔ Refresh Token System ✔ Secure Auth Middleware ✔ Change Password API ✔ Forgot Password API ✔ Reset Password API ✔ Token Rotation & Security Best Practices This project follows real-world backend architecture used in production applications. 🛠 Tech Stack Node.js Express.js MongoDB JWT (Access & Refresh Token) Bcrypt Nodemailer (OTP Email) 🔐 What You Will Learn How Access Token works Why Refresh Token is required How to implement secure authentication middleware Password hashing best practices Secure token storage strategy How to protect private routes 0:00 Introduction 0:10 send_otp API, send otp on email 1:12:51 login API using access & refresh Token 2:24:13 Auth Middleware & change_password API 3:12:00 reset_password API 💡 Who Should Watch? Backend Developers MERN Stack Developers Beginners learning JWT Authentication Anyone building secure APIs #backenddevelopment #javascript #webdevelopment #authentication #jwt #nodejs #backend #mernstack #api