Google trends Public Holidays Coupon Code Code Compiler

The Ultimate Guide to JWT Refresh Tokens and Redis for Node.js Authentication

Sep 8, 2023

Securing Node.js applications with JSON Web Tokens (JWT), refresh tokens, and Redis is a common and effective approach to enhance the security of your authentication and authorization mechanisms. This combination provides secure authentication, token expiration management, and the ability to handle token revocation. Here's a step-by-step guide on how to implement it:

1. Set Up Your Node.js Application:

Ensure you have a Node.js application set up with a web framework like Express.js. If not, you can create a basic Express.js application:

npm install express

2. Install Required Packages:

You'll need several npm packages to implement JWT-based authentication with refresh tokens and Redis:

npm install express express-validator jsonwebtoken bcrypt redis

3. Create a Configuration File:

Create a configuration file to store secret keys, token expiration times, and other sensitive information. It's crucial to keep these values secret and not hardcode them in your code.

// config.js
module.exports = {
  jwtSecret: 'your-secret-key',
  jwtExpiration: '15m', // Token expiration time
  refreshTokenExpiration: '7d', // Refresh token expiration time
  redisUrl: 'redis://localhost:6379', // Redis server URL

4. Implement User Authentication:

Set up user authentication logic, typically involving username and password validation. Use bcrypt to securely hash and compare passwords. When a user successfully logs in, issue a JWT and a refresh token.

const express = require('express');
const jwt = require('jsonwebtoken');
const bcrypt = require('bcrypt');
const config = require('./config');
const redis = require('redis');
const client = redis.createClient(config.redisUrl);

const app = express();

// Authenticate user and issue tokens'/login', async (req, res) => {
  const { username, password } = req.body;

  // Check user credentials (replace with your logic)
  if (validUser) {
    const user = { id: 1, username: 'user1' }; // Replace with your user object

    // Create a JWT
    const accessToken = jwt.sign(user, config.jwtSecret, { expiresIn: config.jwtExpiration });

    // Create a refresh token
    const refreshToken = jwt.sign(user, config.jwtSecret, { expiresIn: config.refreshTokenExpiration });

    // Store the refresh token in Redis
    client.set(username, refreshToken);

    res.json({ accessToken, refreshToken });
  } else {
    res.status(401).json({ message: 'Invalid credentials' });

// Other routes and middleware for protected endpoints

5. Protect Routes with JWT Middleware:

Use JWT middleware to protect routes that require authentication. This middleware verifies the JWT and extracts the user information.

const jwtMiddleware = (req, res, next) => {
  const token = req.header('Authorization');

  if (!token) return res.status(401).json({ message: 'Access denied' });

  try {
    const user = jwt.verify(token, config.jwtSecret);
    req.user = user;
  } catch (error) {
    res.status(400).json({ message: 'Invalid token' });

// Protect routes with JWT middleware
app.get('/protected', jwtMiddleware, (req, res) => {
  // Access the user via req.user
  res.json({ message: 'Protected resource', user: req.user });

6. Implement Token Refresh:

Allow users to refresh their access tokens using refresh tokens. Create an endpoint that accepts a refresh token and issues a new access token.'/refresh-token', (req, res) => {
  const { refreshToken } = req.body;

  // Verify the refresh token
  jwt.verify(refreshToken, config.jwtSecret, (err, user) => {
    if (err) {
      return res.status(401).json({ message: 'Invalid refresh token' });

    // Check if the refresh token is still valid in Redis
    client.get(user.username, (err, storedToken) => {
      if (err || refreshToken !== storedToken) {
        return res.status(401).json({ message: 'Invalid refresh token' });

      // Issue a new access token
      const accessToken = jwt.sign(user, config.jwtSecret, { expiresIn: config.jwtExpiration });
      res.json({ accessToken });

7. Handle Token Revocation:

To handle token revocation (e.g., when a user logs out or changes their password), you can remove the associated refresh token from Redis.'/logout', jwtMiddleware, (req, res) => {
  // Remove the refresh token from Redis
  client.del(req.user.username, (err, reply) => {
    if (err || !reply) {
      return res.status(500).json({ message: 'Error revoking token' });

    res.json({ message: 'Token revoked' });

Copyright 2024. All rights are reserved