Why WebSockets?
The answer to why we need WebSockets lies in the question—what are the problems with the other methods of communication? Some of the methods used for server communication are request/response, polling, and long-polling, which have been explained as follows:
Request/Response: This is a commonly used mechanisms in which the client requests the server and gets a response. This process is driven by some interaction like the click of a button on the webpage to refresh the whole page. When AJAX came into the picture, it made the webpages dynamic and helped in loading some part of the webpage without loading the whole page.
Polling: There are scenarios where we need the data to be reflected without user interaction, such as the score of a football match. In polling, the data is fetched after a period of time and it keeps hitting the server, regardless of whether the data has changed or not. This causes unnecessary calls to the server, opening a connection and then closing it every...
