Working with mod_jk (http://jakarta.apache.org/tomcat/connectors-doc/index.html)
Tomcat workers Howto (http://jakarta.apache.org/tomcat/connectors-doc/howto/workers.html)
Apache JServ Protocol version 1.3 (ajp13) (http://jakarta.apache.org/tomcat/connectors-doc/common/ajpv13a.html)
Apache - Tomcat HOWTO (http://www.johnturner.com/howto/apache-tomcat-howto.html)
Apache 1.3.23 + Tomcat 4.0.2 + Load Balancing (http://www.ubeans.com/tomcat/)
Tomcat 5 Clustering (http://jakarta.apache.org/tomcat/tomcat-5.0-doc/printer/cluster-howto.html)