html:

<meta http-equiv="pragma" content="no-cache">

<meta http-equiv="cache-control" content="no-cache, must-revalidate">

<meta http-equiv="expires" content="wed, 26 feb 1997 08:21:57 gmt">

<meta http-equiv="expires" content="0">


php:

1.

header("expires: mon, 26 jul 1997 05:00:00 gmt");

header("cache-control: no-cache, must-revalidate");

header("pragma: no-cache");

2.

header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");

header("Cache-Control: no-cache, must-revalidate");

header("Pragma: no-cache");

asp:

1.

response.expires=0

response.addheader("pragma","no-cache")

response.addheader("cache-control","no-cache, must-revalidate")

2.

Response.Expires = 0

Response.Expiresabsolute = Now() - 1

Response.AddHeader "pragma","no-cache"

Response.AddHeader "cache-control","private"

Response.CacheControl = "no-cache"


jsp:

response.addheader("cache-control", "no-cache");

response.addheader("expires", "thu, 01 jan 1970 00:00:01 gmt");