During a web session, websites utilise a session ID to respond to user inputs. A web session ID is saved in a visitor's browser to track sessions. Any HTTP requests made by the visitor while on the site are passed together with this session ID (e.g., clicking a link).
Cookies are one of the most often used technologies in Java for session tracking. The information in the cookies is in the form of a key-value pair. The server sends it to the client's browser. It is saved in the client system by browsers.
Session tracking strategies include URL rewriting, using session objects, using cookies, and using hidden fields.
Persistent cookies are a fourth way for tracking sessions. A cookie is a small piece of data supplied by a web server to a browser and then read by that browser.
We need Session Tracking to make the client-server relationship stateful because the HTTP protocol is stateless. Conversion monitoring in online shopping, mailing applications, and E-Commerce applications requires session tracking.
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