HTML cache-control

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

META

<META HTTP-EQUIV="CACHE-CONTROL" CONTENT="NO-CACHE">

<META HTTP-EQUIV="PRAGMA" CONTENT="NO-CACHE">

<META HTTP-EQUIV="EXPIRES" CONTENT="Mon, 22 Jul 2002 11:12:01 GMT">