FAQ


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How to disable browser caching for a specific JSP?

It is possible to keep the browser from caching a JSP page response. The following hints added to the response header seem to prevent most modern browsers from pulling pages out of cache when the same URL is "hit":

<%
response.setHeader( "Pragma", "no-cache" );
response.setHeader( "Cache-Control", "no-cache" );
response.setDateHeader( "Expires", 0 );
%>

The same effect can be achieved by using meta tags in the HTML header:

 <meta http-equiv="Pragma" content="no-cache">
<meta http-equiv="Cache-Control" content="no-cache">
<meta http-equiv="Expires" content="Sat, 01 Dec 2001 00:00:00 GMT">

The Cache-Control header was added in HTTP 1.1, while the other two were also present in HTTP 1.0.


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