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(a)lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] On
Behalf Of WangRamon
Sent: 12 December 2011 09:44
To: rouvas(a)di.uoa.gr; rules-users(a)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@mm.di.uoa.gr<mailto:rouvas@mm.di.uoa.gr>
To: rules-users@lists.jboss.org<mailto:rules-users@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@hotmail.com<mailto:ramon_wang@hotmail.com>> &g t; To:
rules-users@lists.jboss.org<mailto:rules-users@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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