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

Mon Dec 12 05:09:34 EST 2011

Hi Laun I don't know how Drools can handle it or whether it can handle it even after i persist the rules into some database. But it becomes much more clearer to me that maybe Drools is not my best choice here, or at least i need to consider the options from Thomas. Thank you. CheersRamon
 > Date: Mon, 12 Dec 2011 11:02:28 +0100
> From: wolfgang.laun at gmail.com
> To: rules-users at lists.jboss.org
> Subject: Re: [rules-users] Can Drools supply large Knowledge Base?
> 
> Do you think that you are on the right track at all?
> 
> A simple, single Java if built this way to have a size of several GBs
> is a no-no.
> 
> -W
> 
> 
> 2011/12/12 WangRamon <ramon_wang at hotmail.com>:
> > Hi Thomas
> >
> > It's a tiny rule for now, but in the future i will append more conditions
> > automatically by machines by analyzing some user logs, the size of the rule
> > file may grow to several GBs and that's what i'm worrying about?
> >
> > Thanks
> > Ramon
> >
> > ________________________________
> > From: TSwindells at nds.com
> > To: rules-users at lists.jboss.org; rouvas at di.uoa.gr
> > Date: Mon, 12 Dec 2011 09:54:01 +0000
> > Subject: Re: [rules-users] Can Drools supply large Knowledge Base?
> >
> > 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
> >> 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> &g t; 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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> >> > rules-users at lists.jboss.org
> >> > https://lists.jboss.org/mailman/listinfo/rules-users
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> >> > https://lists.jboss.org/mailman/listinfo/rules-users
> >> >
> >>
> >>
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> >
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