Please, I need know wht is the best scheme for Jboss Clustering for large number of nodes (15 o more)

Jboss 3.x + Tomcat 4x + Apache Web Server

Jboss 3x + Tomcat 4x

Jboss 3x + Jetty

I am planning use, Distributed Cache + Hibernate

I need the best performance + best security level


Thank
Esteban
eshernan@yahoo.com