Apache httpd with mod_jk has the ability to balance the load forwarded to a number of instances of a Java application running in different Tomcat containers, probably on different host c.p.u.s in most circumstances. I covered this a few days ago - see here for details.

But there's a follow up question "how is the loading working out", and the status monitor in mod_jk provides you with a web front end to the stats. There's a sample configuration file here; the captured display looks something like:


(written 2007-10-07 18:02:23)

 A655 - Web Application Deployment - Using Tomcat and Apache httpd Together
A900 - Web Application Deployment - Tomcat - Extra Features

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Using a MySQL database to control mod_rewrite via PHP
Static variables in PHP
Simple page password protection - PHP
Etag in http headers - what is it?
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