[rules-users] Can Drools supply large Knowledge Base?

[WangRamon]

Hi Stathis You're probably right, maybe it's a wrong question, i'm new to Drools, so I copy the rule sample from user guide as below to better explain, that's what i need, but the rule will be automatically generated in the future.. package com.company.license

rule "Is of valid age"
when
    $a : Applicant( age < 18 )
then
    $a.setValid( false );
end So in the future the rule may include more and more conditions like below: 

rule "Is of valid age2"
when
    $a : Applicant( age > 18 and age < 20 )
then
    ...end
So it may grow to be a very large rule(?), and this is actually my question: how to handle this big rule? Thanks you guys CheersRamon> Date: Mon, 12 Dec 2011 11:33:10 +0200
> From: rouvas at mm.di.uoa.gr
> To: rules-users at lists.jboss.org
> Subject: Re: [rules-users] Can Drools supply large Knowledge Base?
> 
> WangRamon wrote:
> >
> > Hi Guys I'm still confused about this question, let's say i may have a
> > very large rule set, how can Drools support this case, will it load every
> > rule into memory? Any idea? Thank you guys. CheersRamon
> 
> You are either asking the wrong question or you do not understand what you
> are asking.
> 
> In your previous post, you mentioned a Knowledge Base of 100GB.
> In this post you are talking about a rule set.
> These are different things.
> A Knowledge Base contains rules *and* facts and can indeed be quite large.
> A rule set contains only rules. For a rule set to grow this much, it means
> you have seriously misunderstand your problem. I would suggest you go back
> to the drawing board.
> 
> Real-world example:
> Rule set of about 400 rules.
> Facts : In the order to 100.000.
> Command line execution shows an approximate 400MB RAM consumption, meaning
> with the JDK and all (not only Drools memory consumption).
> 
> So, unless you want to hear from someone more experienced than me, I'd
> suggest you re-phrase your question by stating the exact problem you are
> facing or anticipating.
> 
> Cheers,
> -Stathis
> 
> 
> 
> >  From: ramon_wang at hotmail.com
> > To: rules-users at lists.jboss.org
> > Date: Thu, 8 Dec 2011 11:59:21 +0800
> > Subject: [rules-users] Can Drools supply large Knowledge Base?
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Hi All
> >
> > I'm new to Drools, I will build a very large Knowledge Base, let's say it
> > will be larger than 100GB, the files will be stored in a distribute
> > database, so can Droools supply this large Knowledge Base? Any solution?
> > Thank you very much.
> >
> > Cheers
> > Ramon
> >
> >
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> 
> 
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