REST API: A Building Block of Modern Web Applications

A RESTful API (Representational State Transfer) is a software architectural style that defines a set of constraints for creating web services. It's a popular approach for building web APIs that interact with various clients, such as web applications, mobile apps, and other services.   

Key Principles of REST:

Client-Server Architecture:

Clear separation between the client and server.   
The client requests resources from the server, and the server responds with the requested data.   
Statelessness:

Each request from the client must contain all the information necessary to understand and process the request.   
The server does not store any session state between requests.   
Cacheability:

Responses can be cached to improve performance and reduce server load.   
Clients can cache responses and reuse them for subsequent requests.   
Uniform Interface: