A REST API performs the requests and receive responses via HTTP protocol to POST, DELETE, GET, PUT the data. It works by creating small modules to address each part of function (for example, transaction) and completes the entire task efficiently.
Getting clear with the key motive of REST API, lets go further with the main PRINCIPLES OF REST which help to fulfill this task of connectivity.
- CLIENT- SERVER: Drawing a line between the client-server, rest architecture enables smooth interface and develops both of them to perform their specific functions effectively.
- STATELESS OPERATIONS: REST statelessness means being free on application side, that is every new HTTP request is independent of any previous request. This increases efficiency in its functioning as complete information required to fulfill the request is transferred from client to server and further task is carried out with correctness.
- LAYERED SYSTEM: Composition of multiple layers of servers helps to maintain application’s security. It also enhances stability, encapsulates legacy system and improves flexibility.
- UNIFORM INTERFACE: Having a uniform interface lets the application access to bring out updates via unique URL. This interface provides a standardized means of communicating between the client and the server, such as using HTTP with URI resources, CRUD (Create, Read, Update, Delete), and JSON.
- CACHEABLE: Storage of cache-able data on client side enables to reduce the internal server usage and allow API users with the tools necessary to provide the fastest and most efficient apps possible.
- CODE ON DEMAND: This is an optional constraint. It allows the client’s code or applets to be downloaded and be used within the application. It simplifies the clients by creating a smart application which doesn’t rely on its own code structure.
These compose the REST Architectural constraints.
Stay tuned and enjoy tech!
Shruti.A.M 