Hello all, After searching the web and Drools forums for a couple of days, I couldn't find a solution to the problem I've got to solve. Anyway, if there's a thread pointing at the same problem, I apologize and please, let me know where it is. My current scenario involves a Drools cluster and demands high availability and scalability of nodes. I have to provide a pool of rules (Guvnor should easily handle that) and a set of servers to process facts against those rules. This is where I'm stuck at. I need to make sure all generated facts are shared across drools servers at the time they get into the cluster. In other words, what I need is a kind of shared (and persistent) session, and this session should contain unique facts, so the nodes don't waste time processing what has already been processed by another node. Also, session response time is critical. Since I'm new to the Drools world, maybe I'm missing some important aspects here, however, as far as I understood, Drools should be able to supply my requirements. Already read about Drools-Grid (Is it still alive? Being developed? Reliable?) and JBoss Infinispan. Both seem to help on solving this requirement, but I'm not sure whether they're the correct tools to attach to the arch and get to the solution. Moreover, I have to make sure an instance of Guvnor can share rules with other instances being queried by the Drools servers. How can I solve the problems? Thank you in advance, Mauro -- View this message in context: http://drools.46999.n3.nabble.com/Shared-Facts-across-nodes-tp4023210.html Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Hi, as an alternative, would it be possible to have several independent nodes persisting their sessions into a remote and shared database, thus a third "listener" application would load the database content in memory as an entire session, combining all persisted sessions? Is there an out-of-the box way to reach that? Br, Mauro -- View this message in context: http://drools.46999.n3.nabble.com/Shared-Facts-across-nodes-tp4023210p402... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

Steve, the system is not implemented yet, but that's what I'm worried about, you're right. I'll take a look at CEP and distributed queues.. haven't thought of that before. Moreover, does Drools provide any failover solution? Thanks for the light!! Mauro -- View this message in context: http://drools.46999.n3.nabble.com/Shared-Facts-across-nodes-tp4023210p402... Sent from the Drools: User forum mailing list archive at Nabble.com. _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users