What is API
API stand for application programming interface
- Allow two application to communicate with each other
- Contract between one piece of software and another
- Structure request and response
What is Rest
Rest is stand for Representational State Transfer
if is an architectural style for network communication between two application which relies on a stateless protocol (Usually HTTP) for interaction
What makes an API a Restful API
- Stateless
- Client/Server
- Uniform Interface
- Cache able
- Layered System
Code on Demand(Optional)
In Restful API's we use HTTP Verbs ?
Get -→Retrieve a resource
Post -→Create a resource
Put-→Update a resource
Delete -→Delete a resource\
HTTP Status Code
200-→Everything is OK
201-→Resource created
400-→Bad request
404-→Not found
401-→unauthorized
403-→Forbidden (Not allowed)
What is the resource
Endpoint:
API Versioning
we can send version in header of request and in URL as well