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A REST API (Representational State Transfer Application Programming Interface) is a web-based architectural style used to build web services. The RESTful API is an interface that uses HTTP requests to GET, PUT, POST, and DELETE data. RESTful API is a popular choice for developing web applications because it provides an easy-to-understand interface that can be used to communicate between different systems.
The following are some of the characteristics of a standard RESTful API:
- Stateless: The client and server do not need to store any state about each other, and each request contains all the necessary information for the server to understand and process the request.
- Resource-Based: The API is resource-based, which means that each resource has a unique identifier (URI) and can be manipulated using standard HTTP methods (GET, POST, PUT, DELETE).
- Representations: The resources are represented in different formats such as JSON, XML, or HTML.
- Uniform Interface: The API has a uniform interface for accessing and manipulating resources.
- Cacheable: Responses from the server can be cached to improve performance.
- Layered System: The API can be layered, meaning that intermediaries such as proxy servers, load balancers, and firewalls can be used to improve scalability, security, and performance.
- Client-Server: The API is a client-server architecture, meaning that the client and server are separated by a network and communicate using HTTP.
By following these principles, a standard RESTful API can provide a reliable, scalable, and flexible way to communicate between different systems.