Currently we work off a database to share events for load balancing and issues related to restarts But that takes a hit on performance. It will also be good to have "event type/event content" based expiry times so that we can reduce the size of heap. -Amit
2010/2/19 Chetan Mahadev <mahadev.che...@gmail.com> > > Hi > > Can anyone tell me how to Implement temporal based event correlation using > drools fusion in a load balancing environment. > What is the best practice in a situation like this?? > > Use case : To correlate events which comes into the system with in a time > window. > > Scenario1: > Single System Scenario: that is One working memory > > 1.All the events come into the system, > 2.Temporal based rules are written using Drools-Fusion. > 3.Correlations takes place if all the events come with in the time window, > else the rule expires. > Note: All these takes place with in a single working memory ( Single > System) > > > Scenario2: > Two System Scenario in active/active: that is two working memories > > 1.All the events come into the system, > 2.Temporal based rules are written using Drools-Fusion. > 3. Same rules are deployed in both the systems (active/active) > 4.Both systems are load-balanced, > 5. Event1 goes to System1, Event2 goes to System2 and again Event3 goes > system1. ( load -balanced) > > As a result, System1 recieves 2 events out of 3 events, and System2 the > other 1 event. > > Correlation never happens since I dont recieve all the events in a single > working memory. > > How do we handle this kinda scenario?? > > Do we have any best practise that is followed in a clustered or > load-balanced environment?? > > Pls help me.. I am stuck. > > Regds > Chetan > > > > > > > > In a single system, Fusion/temporal based correlation works completely > fine. > > Use case: > I have a situation, where events flow into two active components (both > running simultaneosly) > > > _______________________________________________ > rules-users mailing list > rules-users@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > >
_______________________________________________ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users