REST

REST

1. paradigm

   • architectural style
     • standards
       • computer systems on the web
         • RESTful systems

2. REpresentational State Transfer

3. characterized

   • Statelessness
     • does not need to know anything about what state the other
     • use of resources
     • understand any message received
     • nouns of the Web
       • describe any object, document, or thing that you may need to store or send to other services
       • reliability
       • uick performance
       • scalability
     • operations on resources
       • do not rely on the implementation of interfaces
   • Separation of Client and Server
     • Statelessness
     • the code can be changed at any time without affecting the operation of the other
     • modular and separate
     • simplifying the server components
       • interface across
       • scalability
       • evolve independently

4. Communication between Client and Server

   • Requests
     • HTTP verb
       • 4 basic HTTP
         • GET
           • retrieve
         • POST
           • create
         • PUT
           • update
         • DELETE
           • remove
     • header
       • Accept field
       • MIME Types
         • type
           • image
           • audio
           • video
           • application
         • subtype
           • png, jpeg, gif
           • wav, mpeg
           • mp4, ogg
           • json, pdf, xml, octet-stream
         • slash (/)
     • path
       • path to a resource
       • first part be the plural form
       • degree of specificity needed
     • optional message body
   • Sending Responses
     • Content Types
       • client
         • alerts to the type of data it is sending
         • text/html, application/xhtml
       • server
         • one of the options that the client specified
         • text/html
     • Response Codes
       • status success of the operation
         • Status code
           • 200 (OK)
             • successful HTTP requests
           • 201 (CREATED)
             • item being successfully created
           • 204 (NO CONTENT)
             • successful HTTP requests, nothing in body
           • 400 (BAD REQUEST)
             • request cannot be processed
           • 403 (FORBIDDEN)
             • does not have permission to access
           • 404 (NOT FOUND)
             • resource could not be found
           • 500 (INTERNAL SERVER ERROR)
             • answer for an unexpected failure