REST API
An architectural style for designing networked applications using HTTP methods.
Definition
REST (Representational State Transfer) is an architectural style for building web services that use HTTP methods (GET, POST, PUT, DELETE) to perform operations on resources. RESTful APIs are stateless, meaning each request contains all information needed to process it.
REST remains the most common API architecture, though GraphQL offers an alternative for complex data needs.
Why It Matters
REST APIs enable communication between frontend, backend, and third-party services. Understanding REST is essential for modern web development and integrations.
Well-designed REST APIs are intuitive, consistent, and appropriately documented.
Examples in Practice
A mobile app uses REST API endpoints to authenticate users, fetch product data, and process orders.
API documentation describes each endpoint's URL structure, HTTP method, parameters, and response format.
A rate-limiting strategy protects REST APIs from abuse while ensuring fair access for legitimate users.