React Redux Node MongoDB JWT Authentication Example is the today’s leading topic. We use React and Redux for the frontend, Node.js as a platform, express as a web framework and MongoDB as a NoSQL database. We use JWT authentication where, if the user is logged in then it returns a token and the client saves that token. The client uses that token each time when he tries to access the protected route. So the concept is obvious. Now let us start this small project. This article is not about the beginner’s course.