What is Express architecture and how does it work?

What is Express architecture and how does it work?

Express architecture refers to the design and structure of applications built using the Express framework, which is a minimal and flexible Node.js web application framework. It provides a robust set of features for web and mobile applications, allowing developers to create APIs and web servers easily.

What are the main components of Express architecture?

The main components of Express architecture include middleware, routing, request and response objects, and the application itself. Middleware functions are used to process requests, while routing defines how the application responds to client requests.

Can you explain middleware in Express?

Middleware in Express is a function that has access to the request and response objects, and the next middleware function in the application’s request-response cycle. It can perform tasks such as logging, authentication, and modifying request and response objects.

How does routing work in Express?

Routing in Express allows you to define the endpoints of your application and specify how the application should respond to different HTTP requests. You can create routes for different HTTP methods like GET, POST, PUT, and DELETE.