RESTful architecture constraints

What is REST

REST or Representational State Transfer, is an architectural style for API interactions over HTTP. It is an application-level standard for the communication between the client and the server and is characterized by statelessness and clear client-server separation of concerns.

1. Client - server model

  • Seperate of concerns

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  • client and server don't share any code

Uniform interface

  • Client and server share a common technical interface

  • Interface:

    • Contract for communication between client-server
    • Contract has no business context

  • There are 5 guilding principles

    • Indentify of the resource (URI/URL)
    • Representation of the resource: XML, JSON, TXT
    • Self descriptive message -metadata, http headers

State management

  1. No state management in mid tier/server
  2. All calls from client are independent

Caching

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API status code

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References

https://www.udemy.com/course/rest-api/

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