[rules-users] What is the Best practice of using "Drools Fusion" in a Load balancing environment (ie temporal reasoning between 2 working memories)??

[Amit Kumar]

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.chetan at 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 at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/rules-users/attachments/20100219/290a5673/attachment.html