Authorization Middleware: check User’s roles with record in database.JWT Authentication Middleware: verify SignUp, verify token.Via Express routes, HTTP request that matches a route will be checked by CORS Middleware before coming to Security layer. You can have an overview of our Node.js Express App with the diagram below: More details at: JWT Refresh Token implementation in Node.js example Node.js Express Login example Architecture – Dockerize Node.js Express and MySQL example – Docker Compose – Deploying/Hosting Node.js app on Heroku with MySQL database – Node.js + PostgreSQL: User Authentication & Authorization with JWTįullstack (JWT Authentication & Authorization example): – Node.js + MongoDB: User Authentication & Authorization with JWT – Node.js Rest APIs example with Express, Sequelize & MySQL – Node.js Express: Login and Registration example with JWT (using HTTP Headers) Way to use Sequelize to interact with MySQL Database.How to define Data Models and association for Authentication and Authorization.How to configure Express routes to work with JWT.Node.js Express Architecture with CORS, Authentication & Authorization middlewares & Sequelize.Appropriate Flow for User Login and Registration with JWT Authentication.In this tutorial, we’re gonna build a Node.js Express Login and Registration Rest API example that supports JWT ( JSONWebToken) and works with MySQL database.