HTTP Made Easy: Understanding the Web Client-Server Communication

The most widely used HTTP methods are GET, POST, PUT & DELETE. Each of these methods performs the operation required and returns success or failure on its completion. HTTP is stateless because each request is executed independently, without any knowledge of the requests that were executed before it. HTTP Cookies make this connection stateful by sending a cookie along with every request. The most commonly used method is GET and PUT, which is used to read the data and retrieve it, and return that to the client.