Description: Route middleware in web application frameworks, such as Express.js, is a function that executes during the lifecycle of an HTTP request for a specific route. This type of middleware allows developers to intercept and manipulate requests and responses before they reach their final destination, typically a route handler. Middleware functions can perform various tasks, such as data validation, user authentication, activity logging, error handling, and modifying the request or response. One of the most notable features of route middleware is its ability to be chained, meaning multiple middleware functions can be applied to a single route, allowing for a modular and reusable workflow. This not only improves code organization but also facilitates the maintenance and scalability of applications. In summary, route middleware is an essential tool in web development that enables developers to customize the behavior of their applications efficiently and effectively.
