[rules-users] Query on performance when adding/removing rules

[Greg Barton]

It would perform less well, especially if you're parsing new rules and building new rulesets with each request.  But as with every performance issue, you never know for sure until you mock up and benchmark.

But, some questions to get more detail:

Do you want the old rules to interact with the new rules?  If not, it's best to create a new rulebase and spawn sessions from that.  This is especially the case if you're doing concurrent requests against the same rulebase and don't want two sessions sharing their new rules.

Will you reuse new rules, or are they unique with every request that adds them? (i.e. could a subsequent request use the new rules without having to add them again?)

Can you give more details about the problem domain?

--- On Tue, 11/24/09, DeepakA <angeshwar at gmail.com> wrote:

> From: DeepakA <angeshwar at gmail.com>
> Subject: Re: [rules-users] Query on performance when adding/removing rules
> To: rules-users at lists.jboss.org
> Date: Tuesday, November 24, 2009, 3:57 AM
> 
> any suggestions regarding the impact on performance???
> 
> 
> 
> DeepakA wrote:
> > 
> > We have a set of rules (lets call them old rules)
> running in our strategy
> > server.
> > A new requirement is that - the client can make calls
> to the server, at
> > that point new rules need to be loaded in the workin
> memory (at run time),
> > if the rules get executed then the rules need to be
> removed from the
> > WorkinMemory (after the consequence section is
> executed)
> > 
> > I would like to know if repeated adding and removing
> of rules in the
> > working memory will lead to performance issues?
> > 
> > i.e. when the new rules are added/removed the
> old-set-of rules will still
> > be evaluated in the background, will this hamper
> performance?
> > 
> 
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