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How to implement host-header page expires in Tomcat

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bkennedy

bkennedy

IS-IT--Management
Aug 13, 2003
3
US
I'm new to Tomcat but am familiar with Apache and IIS. How do you implement page-expiration timeouts in Tomcat, a la "mod_expires" in Apache ? I am having problems with web customers accessing certain dymanic content over a proxy server and need to set the expiration timeout to zero and can't figure it out.

Very confused...
 
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read the tomcat docs, about config and server.xml (tomcat config file)
 
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Thanks for the tip. You know I never thought of that...oh wait, yes I did, and I didn't find anything on the subject, so I decided to post the question here.

Anyone have anything more helpful than "read the documentation" ?
 
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I'm new to Tomcat, so I'm unsure whether there is a configuration to set this. However, I'm using the following in JSP's that seems to solve client caching issues.

1. Place the following in at the start of the JSP
<%
response.setHeader(&quot;Cache-Control&quot;,&quot;no-cache&quot;); //HTTP 1.1
response.setHeader(&quot;Pragma&quot;,&quot;no-cache&quot;); //HTTP 1.0
response.setDateHeader (&quot;Expires&quot;, 0); //prevents caching at the proxy server
%>

2. Place the following inside the <head> block
<META HTTP-EQUIV=&quot;Cache-Control&quot; CONTENT=&quot;no-cache&quot;>
<META HTTP-EQUIV=&quot;Pragma&quot; CONTENT=&quot;no-cache&quot;>
<META HTTP-EQUIV=&quot;Expires&quot; CONTENT=&quot;-1&quot;>

3. Place the following at the bottom of the file just before the </HEAD>
<head>
<META HTTP-EQUIV=&quot;Cache-Control&quot; CONTENT=&quot;no-cache&quot;>
<META HTTP-EQUIV=&quot;Pragma&quot; CONTENT=&quot;no-cache&quot;>
<META HTTP-EQUIV=&quot;Expires&quot; CONTENT=&quot;-1&quot;>

Of course, if your trying to set the expiring for non-jsp content such as images....
 
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I solved it. Simple solution: Apache2 with mod_jk. Solves everything, as I now use Apache2 as my HTTP server and let Tomcat act as the servlet engine.
 
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