Question
Asked Jan 16, 2019

What are REST web services and what is the reason for its popularity?

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Step 1
  • REST stands for Representational State Transfer and is an architectural style for most web based applications and apps better known as web services today.
  • Being mostly based on HTTP which is the default web networking protocal both service provider and the service consumer benefit in terms of usability, accessibility, availability and scalability.
  • REST protocol is stateless and not conversational in nature as explained below.
  • REST based web services enable access to resources such as pictures, videos, files, web pages, business data, etc.
  • REST does not dictate message format and offers flexibility in terms of popular web formats such as JSON, XML.
Step 2

The resource which is denoted by the REST based service must be represented completely in a single self-contained message. This enables a stateless message protocol where a back and forth communication is not required. Every message request is for a single resource and the reply is the complete resource and the session is deemed complete with the reply.

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Step 3

This is in contrast with a conversational or chatty message protocol such as a dedicated long running session between a client and the server in a traditional client server architectu...

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Computer Engineering

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