desabilitar memoria cache en navegadores

En firefox
http://www.dclick.com.br/2009/07/05/desabilitando-o-cache-do-firefox/
En Chrome
http://www.ehowenespanol.com/chrome-deje-almacenar-cache-como_206760/
En firebug
(Clic derecho en  la pestaña NET)
https://getfirebug.com/wiki/index.php/Net_Panel

Ctrl+F5 does indeed do a force cache purge for that page, while Ctrl+R does not.

My completely unresearched educated guess is that Ctrl+F5 O ctrl+ shift + R generally refreshes the page without using cache while Ctrl+R or plain F5 refreshes the page using cache as normal. – MooGoo Oct 30 '10 at 20:42

http://stackoverflow.com/questions/8589760/difference-between-f5-ctrlf5-and-click-or-refresh-button