What is Session Management?

Keeping track of the user’s preferences over a website or an application as long as the user is logged into the system for a specific time is called Session Management. This lasts until they log out or their session expires. In simpler terms, it’s like keeping a record of user activities when they simply surf the application so that from next time onwards, the user doesn’t have to specify the preferences again.

Session Management in Java

Session is used to save user information momentarily on the server. It starts from the instance the user logs into the application and remains till the user logs out of the application or shuts down the machine. In both cases, the session values are deleted automatically. Hence, it functions as a temporary storage that can be accessed till the user is active in the application and can be accessed when the user requests a URI. This session is stored in binary values, hence maintaining the security aspect, and can be decoded only at the server end.

Similar Reads

What is Session Management?

Keeping track of the user’s preferences over a website or an application as long as the user is logged into the system for a specific time is called Session Management. This lasts until they log out or their session expires. In simpler terms, it’s like keeping a record of user activities when they simply surf the application so that from next time onwards, the user doesn’t have to specify the preferences again....

Why is it Required?

Sessions are required because they perform multiple functions ranging from time management to security perspective. The following can be noted in this regard....

Role of Cookies and Other Tracking Mechanisms

Cookies and other tracking mechanisms play a crucial role in session management by helping applications remember the users through multiple interactions and their preferences and behavior. Below are some of the mechanisms through which they manage the task....

How to Get a Session?

We can keep track of a client’s session with the HttpSession object. In Java Servlets, the HttpSession interface provides a way to regulate the state/information about a user varying across multiple requests. It is a part of javax.servlet.http package and allows storing and retrieving the attributes about the user’s information, providing a mechanism for session management....

Common Methods

1. setAttribute(String name, Object value)...

Session Tracking Mechanisms in Servlets

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Session Lifecycle

To maintain the session between a web server and a web client, following methods can be used....

Example of Session Management

The stages which a user session goes through right from its creation to its eventual expiration completes the session lifecycle. In the context of web applications, the lifecycle involves the management of user-specific data across multiple session requests. The key stages involved in the session lifecycle are described below....

Conclusion

Below example demonstrates creating a session, setting and retrieving attributes, and finally, invalidating the session....

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