Rest

Rest

1. it is an architectural style to provide services between computer systems on the web

2. RESPONSE CODES

   • Server responses contain status codes to alert the client to information about the success of the operation
     • 200 (OK)
     • 201 (CREATED)
     • 204 (NO CONTENT)
     • 400 (BAD REQUEST)
     • 403 (FORBIDDEN)
     • 404 (NOT FOUND)
     • 500 (INTERNAL SERVER ERROR)

3. are characterized by

   • they separate the concerns of the client and the server.
   • they have no state
   • Both server and client must know the communication format
   • This separates responsibilities and better distributes resources

4. STATELESSNESS

   • client and server do not need to recognize status
   • Both the server and the client can understand any message received, even without seeing the previous messages.
   • use resources instead of commands
   • reliability, fast performance and scalability, like components that can be managed, updated and reused

5. COMMUNICATION BETWEEN CLIENT AND SERVER

   • requirement format
     • a path
       • Requests must contain a path to a resource on which to perform the operation
     • a header
       • In the request header, the client sends the type of content that it can receive from the server.
       • This is called Acceptcampo and ensures that the server does not send data that the client cannot understand or process.
     • an HTTP verb
       • GET retrieve a specific resource (by id) or a collection of resources POST create a new resource PUT update a specific resource (by id) DELETE remove a specific resource by id
     • an optional message body containing data
   • clients send requests to retrieve or modify resources, and servers send responses to these requests.