What is Middleware in Express and How It Works

Hello readers 👋, welcome to the 10th blog in our Node.js series! In the last post, we built a clean REST API using Express.js for a users resource. We defined routes and handled different HTTP methods. Today, we are going to explore a concept that sits quietly at the heart of every Express application: middleware . If you have ever wanted to log every request, check authentication tokens, or validate incoming data before it hits your route handler, you have needed middleware. Let's understand w