Posted on 3:11 AM by Softminer and filed under ,

Every folder could have different cache (different web.config)

In the Home pane, double-click HTTP Response Headers.
In the HTTP Response Headers pane, click Set Common Headers... in the Actions pane.
In the Set Common HTTP Response Headers dialog box, check the box to expire Web content, select the option to expire after a specific interval or at a specific time, and then click OK.

More Info (Client Cache)
Responses to ... Set Cache for images, css, js in IIS7