Prevent Browser Cache

Response.Expires = 0
Response.Expiresabsolute = Now() - 1
Response.AddHeader "pragma","no-cache"
Response.AddHeader "cache-control","private"
Response.CacheControl = "no-cache"

<cfheader name="expires" value="#now()#">
<cfheader name="pragma" value="no-cache">
<cfheader name="cache-control" value="no-cache, no-store, must-revalidate">

<meta http-equiv="expires" content="Mon, 06 Jan 1990 00:00:01 GMT">

<%
response.setHeader("Cache-Control","no-cache"); //HTTP 1.1
response.setHeader("Pragma","no-cache"); //HTTP 1.0
response.setDateHeader ("Expires", 0); //prevents caching at the proxy server
%>

Header('Cache-Control: no-cache');
Header('Pragma: no-cache');

Sources:

• ASP – http://support.microsoft.com/kb/311006/en-us
• PHP – http://www.php.net/manual/en/function.header.php
• ColdFusion – http://www.bpurcell.org/blog/index.cfm?entry=1075&mode=entry
• JSP – http://www.jguru.com/faq/view.jsp?EID=377&page=2