ASP
response.expires=0
response.addHeader("pragma","no-cache")
response.addHeader("Cache-Control","no-store, must-revalidate")

PHP
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Cache-Control: no-store, must-revalidate");
header("Pragma: no-cache");

JSP:
response.addHeader("Cache-Control", "no-store, must-revalidate");
response.addHeader("Expires", "Thu, 01 Jan 1970 00:00:01 GMT");