How to stop browser caching.

[eluser]Musaddiq Khan[/eluser]
Assalam-o-Alaikum,
I m having problem in showing items in cart.
When I update the quantity of items in cart, it get updated on all other pages except the <b>home page</b>. i.e when i click on the link of home page link then nothing updated it fetches the old values and I've checked it in databse it's updted there. But when I press <b>ctrl+F5</b> it fetches the updated values.
Is there any caching concept in codeigniter that prevent the front page to fetch from the database on front page.
Any help will be appriciated.