we use
J2EE
IntellijIdea 6.0
Jboss4

I hope it is useful to say:

There are some managements like admin, merchant, ... in web layer and
now we want to run them seperately on diferent servers;
1_We have some shared resources and files.
2_It is important to being careful about redunduncy because a trivial
change may bring about to change all managements' sourcecodes.