REST (Representational State Transfer)

REST (Representational State Transfer) is an architectural style used for designing networked applications. It enables seamless communication between clients and servers by leveraging standard HTTP methods, making it a popular choice for web services and APIs.


Core Principles of REST

REST follows six key architectural constraints:


1. Stateless – Each client request must contain all necessary information, as the server does not retain session data.

2. Client-Server Architecture – The client and server operate independently, enhancing scalability and flexibility.

3. Cacheability – Responses can be explicitly labeled as cacheable or non-cacheable to improve performance.

4. Uniform Interface – A consistent structure for interacting with resources using standard HTTP methods.

5. Layered System – Allows intermediate components (e.g., security, load balancing) without affecting interactions.

6. Code on Demand (Optional) – The server can send executable code (e.g., JavaScript) to the client when required.

REST uses HTTP methods to send and receive data. 

Benefits of REST

- Ease of Use – Based on standard HTTP, making it simple to implement.

- Scalability – Stateless design enhances scalability.

- Flexibility – Supports multiple data formats such as JSON and XML.

- Performance – Caching improves response times and reduces load.

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