I have a scenario where I have single entry point Servlet and further Servlets that requests are forwarded to that undertake heavy processing.

I am looking at options to distribute this load and I would like to know if it is possible using Tomcat or another platform to forward requests between Servlets sitting on different servers using a cluster type configuration or similar.

I have found some documentation on clustering Servlets and Tomcat but none indicate if Servlet request forwarding is possible from what I can see.

http://java.sun.com/blueprints/guidelines/designing_enterprise_applications_2e/web-tier/web-tier5.html

http://tomcat.apache.org/tomcat-5.5-doc/cluster-howto.html