Though I have yet to venture down that path, it is possible to set up your web apps (contexts) such that they can make cross-context calls to each other. They have to be set up this way (there's an attribute on the
context attribute of
Tomcat's server.xml that enables this -- not sure how other servers may operate).
Sorry I couldn't give you more specifics. But perhaps this is enough to get you researching down the correct path -- or others that have actually done this could chime in.
Another possibility is to step out of the
servlet mechanisms and use RMI or other comm mechanisms.
[ February 09, 2004: Message edited by: Bear Bibeault ]