WHAT IS REST?

WHAT IS REST?

1. REPRESENTATIONAL STATE TRANSFER

   • Is an architectural style for providing standards between computer systems on the web

2. SEPARATION OF CLIENT AND SERVER

   • RESTful systems, are characterized by how they are stateless and separated the concerns of client and server
     • This means that it doesn't matter if the code of the client or the code of the system changes the operation will not change
       • The separation allows each componet the ability to evolve independently

3. STATELESSNESS

   • The server does not need to know anything about what state the client is in and vice versa
     • Both the server and the client can undestand any message received
       • These contraints help RESTful applications archive reliabity, quick performance, and scalability

4. COMMUNICATION BETWEEN CLIENT AND SERVER

   • clients send requests to retrieve or modify resources, and servers send responses to these requests
     • MAKING REQUESTS
       • REST requires that a client make a request to the server in order to retrieve or modify data on the server.
         • HTTP verbs
           • GET,POST,PUT,DELETE
         • Header
           • The client sends the type of content that it is able to receive from the server
             • MIME Types, used to specify the content types in the Accept field, consist of a type and a subtype. They are separated by a slash (/)
         • Path
           • Requests must contain a path to a resource that the operation should be performed on
             • Paths should contain the information necessary to locate a resource with the degree of specificity needed.
         • an optional message body containing data

5. SENDING RESPONSES

   • CONTENT TYPES
     • In cases where the server is sending a data payload to the client, the server must include a content-type in the header of the response
   • RESPONSE CODES
     • Responses from the server contain status codes to alert the client to information about the success of the operation