Access vs Refresh Token Explained | JWT Authentication Simplified
Access vs Refresh Token Explained | JWT Authentication Simplified
Understand how modern web authentication works using JWT Tokens — with a complete explanation of Access Token and Refresh Token, plus backend testing using Node.js, Express, and Postman.
📁 Source Code:
https://github.com/jitugopale2426/Ref...
What is an Access Token?
An Access Token is a short-lived key (e.g., valid for 2 minutes) used to access protected APIs.
It ensures that only authorized users can interact with the backend — even if the token is stolen, it becomes useless after expiration.
What is a Refresh Token?
A Refresh Token is a long-lived token that allows users to get a new access token after the old one expires.
It keeps users logged in without making them re-enter credentials, improving both security and user experience.
💡 What You’ll Learn in This Video
The complete JWT authentication flow using Access & Refresh Tokens
Why two tokens are better than one for security and convenience
How to issue and verify tokens using jsonwebtoken
Handling token expiration and refreshing automatically
Testing the flow in Postman without any frontend
⚙️ Tech Stack
Node.js
Express.js
JWT (jsonwebtoken)
Postman
#nodejs #express #jwt #authentication #security #backend #accesstoken #refreshtoken #jsonwebtoken #codingtutorial #webdevelopment #api #postman #fullstack