Hi! Thank you for your detailed answer.
Andrus Adamchik schrieb: > I can elaborate some more if you describe the usage patterns that you > envision, and what kind of clustering features you are looking for > (session replication? cache refresh? anything else?) Nothing special at the moment. At the moment we are running two jboss instances with the same functionality and a quite simple load-balancing that is running in front of them. The main problem we are working on is how to synchronize these two servers to avoid concurrent modifications of user-data and to ensure that each instance is processing up-to-date data. Unfortunately there are several pitfalls such as separate caches at different application-layers (the cayenne row- and object-cache at data-layer, a business-object cache at service-layer), JMS queues between different layers, etc. Martin
