What are Middlewares?
Middleware is a piece of code that redefines the functionality of your written logic. It enhances the logic and provides an additional capability. It has access to the request object (req), the response object (res), and the next function in the application’s request-response cycle. Middleware modifies a request before it reaches the destination. It is very helpful in performing tasks like authentication and data manipulation.
Syntax:
// Define your middleware function
const myMiddleware = (req: Request, res: Response, next: NextFunction) => {
// Middleware logic
console.log('Middleware executed');
// Call the next middleware function in the stack
next();
};
Next JS Middleware: Extending Functionality in Your Application
Middleware plays an important role in creating backend applications which are used to intercept incoming requests, perform actions, and modify responses before send to routing handlers. In this article, we will understand middleware in Next.js by creating an authentication middleware.
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