What is session tracking and
how do you track a user session in servlets?
Session tracking is a mechanism that servlets
use to maintain state about a series requests from the same user across some
period of time. The methods used for session tracking are: a) User
Authentication occurs when a web server restricts access to some of its
resources to only those clients that log in using a recognized username and
password. b) Hidden form fields fields are added to an HTML form that are not
displayed in the client’s browser. When the form containing the fields is
submitted, the fields are sent back to the server. c) URL rewriting every URL
that the user clicks on is dynamically modified or rewritten to include extra
information. The extra information can be in the form of extra path
information, added parameters or some custom, server-specific URL change. d)
Cookies a bit of information that is sent by a web server to a browser and
which can later be read back from that browser. e) HttpSession- places a limit
on the number of sessions that can exist in memory. This limit is set in the
session. maxresidents property.
Blog Author: Vijay Kumar
