what is caching,session? when & what is used mostly in
which situtations, how they r implemented in real time?
tell with example?



what is caching,session? when & what is used mostly in which situtations, how they r implement..

Answer / hari kishan reddy

Caching is a technique to store frequently used web pages
and data to local hard disk, for later retrieval.
Session is used to store about the user information.

For example after login you want to use the user-name for
next pages, store the user-name in session, and you can call
this session through out the application. Default timeout
for session is 20 mins.

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