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

[Swindells, Thomas]

That's not a big rule, that is a tiny rule.
So I'm still not sure what you are actually worrying about and why you think you may have an issue.

Thomas

From: rules-users-bounces at lists.jboss.org [mailto:rules-users-bounces at lists.jboss.org] On Behalf Of WangRamon
Sent: 12 December 2011 09:44
To: rouvas at di.uoa.gr; rules-users at lists.jboss.org
Subject: Re: [rules-users] Can Drools supply large Knowledge Base?

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

Cheers
Ramon
> Date: Mon, 12 Dec 2011 11:33:10 +0200
> From: rouvas at mm.di.uoa.gr<mailto:rouvas at mm.di.uoa.gr>
> To: rules-users at lists.jboss.org<mailto: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<mailto:ramon_wang at hotmail.com>> &g t; To: rules-users at lists.jboss.org<mailto: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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