4 ways of Session management in Servlet Java

Session tracking or Session management is an important feature of modern web applications which allows the server to remember it's clients. By keeping a session for each user, Server can serve the client better. It also helps in safety, security and personalization and must for certain kind of web applications e.g. e-commerce sites like Amazon or e-bay which stores item selected by the user for purchase in a shopping cart, even after the user is logged out. Since HTTP is a stateless protocol, there are no ways to know that two HTTP requests are related to each other i.e. they are coming from the same client or they are part of the same process. Session tracking is a mechanism that Servlets and Java Web application use to maintain state about a series of request from the same user across some period of time. By keeping a session, an e-commerce site can maintain add to card facility and also keep tracks of how you interact with the application. Since HTTP doesn't provide a default way to track Session, there are some non-standard ways to manage Sessions in Servlet JSP based application. Let's have a close look on them.

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