What is a REST API? - Definition & Meaning
REST APIs use standard HTTP methods to exchange structured data between systems. It is the dominant architectural style powering modern web services worldwide.
A REST API (Representational State Transfer Application Programming Interface) is a type of API that follows the REST architectural style for designing network services. It uses standard HTTP methods to retrieve, create, update, and delete data via URL-based endpoints.
What is REST API?
A REST API (Representational State Transfer Application Programming Interface) is a type of API that follows the REST architectural style for designing network services. It uses standard HTTP methods to retrieve, create, update, and delete data via URL-based endpoints.
How does REST API work technically?
REST APIs are based on six architectural constraints: client-server separation, statelessness (each request contains all necessary information), cacheability, a uniform interface (consistent URL structure and HTTP methods), a layered system, and optional code-on-demand. Standard HTTP methods include GET (retrieve), POST (create), PUT (full update), PATCH (partial update), and DELETE (remove). REST APIs typically communicate via JSON, use HTTP status codes for error handling (200 OK, 201 Created, 400 Bad Request, 404 Not Found, 500 Internal Server Error), and are documented with OpenAPI/Swagger specifications. Security is implemented via OAuth 2.0, JWT tokens, and API keys.
How does MG Software apply REST API in practice?
MG Software designs and builds RESTful APIs as the backbone of our web applications. We follow best practices for URL naming, error handling, pagination, and versioning, and document every API with OpenAPI specifications for easy third-party integration.
Why does REST API matter?
REST APIs are the standard for communication between web applications and are essential to every modern software architecture. By following RESTful principles, integrations become predictable, well-documented, and easy to maintain across different teams.
What are some examples of REST API?
- A mobile app fetching product data and placing orders through REST API endpoints (GET /api/products, POST /api/orders) on the backend server of an online store.
- A business system exchanging invoice data with an external accounting platform via a RESTful API, where each invoice gets its own unique resource URL.
- A dashboard application fetching real-time data from multiple microservices via REST API calls and combining them into a single cohesive view for the user.
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