From: Justin Case <send_lotsa_spam_here(a)yahoo.com&gt; To: &quot;rules-users(a)lists.jboss.org&quot; <rules-users(a)lists.jboss.org&gt; Cc: Sent: Wednesday, November 7, 2012 3:33 PM Subject: [rules-users] drools grid or other high availability solution? Hello all, I noticed there's not much fuss about drools-grid (anymore?). Is there something still going on there? Is it recommendable for something reliable? Or if not, do you have any hints/links/experience on how to achieve a certain high availability level with DRools servers? Many thanks, JC _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

________________________________ From: Mauricio Salatino <salaboy(a)gmail.com&gt; To: Justin Case <send_lotsa_spam_here(a)yahoo.com>; Rules Users List <rules-users(a)lists.jboss.org&gt; Sent: Friday, November 9, 2012 6:35 PM Subject: Re: [rules-users] drools grid or other high availability solution? Hi Justin, We are working on it, drools-grid was an experimental project to start the design.  We also have the Drools Server using camel, and we will continue the development of the remoting APIs, probably after the next release. Cheers

Hi Justin, We are working on it, drools-grid was an experimental project to start the design. We also have the Drools Server using camel, and we will continue the development of the remoting APIs, probably after the next release.

Can you run multiple instances and have load sharing (I guess no?) How about failover (like if facts are persisted to a shared database?)

Follow up on high availability - I'm planning to use Drools for Capacity Management. In my use-case I need to track # of hours of planned capacity that has been consumed based on hours allocated. I'm planning on having a StatefulKnowledgeSession that will have facts that store the # of hours of capacity that are available for a given week. Then as work comes in (in the form of orders), it will be allocated against this capacity. Even though at a high level this seems to be a simple requirement, the process of allocating resources is very complicated and using rules and FOL would greatly help manage the complexity of the allocation process. Based on the discussion above it looks like I won't be able to architect a solution that's highly available. I'm not concerned about performance (the drools engine is very efficient even on a single server). But it looks like it's not possible to share / replicate session state contained in a StatefulKnowledgeSession across separate JVMs (either on the same server or across 2 servers). Am I correct or am I missing something ? -- View this message in context: http://drools.46999.n3.nabble.com/rules-users-drools-grid-or-other-high-a... 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