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Andrew,

On 3/31/2010 3:02 AM, Andrew Bruno wrote:
> I would like to split the web app up, so that the front end server has
> smarts to know which backend tomcat server to redirect to.
> 
> As far as I know, Apache AJP can be configured to redirect to different
> tomcat backend servers by implementing rules, ideally URL based.  But for
> me, the URL is always the same.
> 
> So, I was wondering if there was a way to code an AJP client inside a front
> end tomcat server, so that I could redirect to whatever backend server the
> business rules decided.

You can force Apache httpd to direct a request to a particular backend
Tomcat server by putting a specially-crafted jsessionid into the URL. If
you don't use cookies to track the session for these requests, you
should be able to create a URL like this:

URL + ";jsessionid=" + sessionId + "." + jvmRoute + "?" + queryString

Would something like this work for you?

- -chris
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