[rules-users] Using the drools as the backend engine for a service

[Jai Vasanth]

As part of the rules evaluation, more objects are inserted into the working
memory. Even though I just insert 1 object after creating a session, rule
outcomes inside lead to more objects to  be inserted.
Correct me if I am wrong, but I was under the impression that a stateless
wouldnt be able to automatically fire rules when we objects are inserted
dynamically

Thanks

Jai

On Feb 4, 2008 1:05 AM, Anstis, Michael (M.) <manstis1 at ford.com> wrote:

>  IMHO, you might achieve better scalability and resilience if you can make
> the working memory stateless.
>
> I assume your "service" to be a web-service over stateless-HTTP and not a
> service exposed over a stateful protocol.
>
> Cheers,
>
> Mike
>
>  ------------------------------
> *From:* rules-users-bounces at lists.jboss.org [mailto:
> rules-users-bounces at lists.jboss.org] *On Behalf Of *Jai Vasanth
> *Sent:* 01 February 2008 22:05
> *To:* Rules Users List
> *Subject:* Re: [rules-users] Using the drools as the backend engine for a
> service
>
> I must have not been clear, yes I was planning on instantiating the
> rulebase when the service starts and instantiating a new session for every
> request.
>
>
>
> ONCE:
>
>  RuleBase ruleBase = RuleBaseFactory.newRuleBase();
> ruleBase.addPackage( pkg );
>
> PER REQUEST:
> Stateful session = ruleBase.newStatefulSession();  (Is this what you were
> referring to as working memory ? )
>
>
> I hope that looks ok.
>
> Thanks
>
> Jai
> On Feb 1, 2008 1:37 PM, Michael Rhoden <mrhoden at franklinamerican.com>
> wrote:
>
> >  You would likely NOT want to create a rulebase per session. Most people
> > create working memory per session. Rulebases should only be loaded once per
> > server (context) in my opinion, and you reload it as rules changes. Loading
> > a rulebase loads rules from a file, and orders your rete tree. For our
> > installation that takes several minutes.
> >
> >
> >
> > Rulebase = once
> >
> > Working memory = per user/transaction
> >
> >
> >
> > -Michael
> >
> >
> >  ------------------------------
> >
> > *From:* rules-users-bounces at lists.jboss.org [mailto:
> > rules-users-bounces at lists.jboss.org] *On Behalf Of *Jai Vasanth
> > *Sent:* Friday, February 01, 2008 3:23 PM
> > *To:* Rules Users List
> > *Subject:* [rules-users] Using the drools as the backend engine for a
> > service
> >
> >
> >
> > Hi,
> >
> >  I am planning on using Drools as the rules engine for a service that I
> > am building. I am considering instantiating a stateful session for every
> > request to the service. The RuleBase would be created when the service
> > starts. Is this the correct way to  go about incorporating Drools in a
> > service ? Is session creation an expensive process and if so are there other
> > efficient ways of doing so ?
> >
> >
> >
> > Thanks
> >
> > Jai
> >
> > _______________________________________________
> > rules-users mailing list
> > rules-users at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
>
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