[rules-users] Large number of rules in Drools

[Shweta1986]

Thanks for the replies..the problem with  import from drl is if number of
rules is high it times out..also I cannot build the package as it says
"network error".

And my rules are very simple it is like if string comparison then set
that's it..still for 20k rules I have lot if issues..guvnor UI timeout
while building the rules.memory issues in application as well while reading
rules on startup.

Thanks,
Shweta
On Wed, Jan 4, 2012 at 1:58 AM, manstis [via Drools] <
ml-node+s46999n3631490h28 at n3.nabble.com> wrote:

> As an aside to Wolfgang's comments, it is possible to import DRL into
> Guvnor.
>
> Select "Create New Package->Import from DRL file".
>
> 2012/1/4 Wolfgang Laun <[hidden email]<http://user/SendEmail.jtp?type=node&node=3631490&i=0>
> >
>
> 20K rules is not excessive, and this number alone should not cause
>> out-of-memory exceptions. Mainly, this is due to rules not being well
>> designed, and in combination with heavy fact loads.
>>
>> Frequently, a large number of rules results from putting all the decision
>> data into rule conditions, even when there are many rules with identical
>> structure in condition and consequence. Offloading the varying constants
>> into static facts may reduce the number of rules by magnitudes.
>>
>> Not the number of rules but the maintenance issue is addressed by using
>> decision tables or some other technique of generating rules from a handier
>> source.
>>
>> -W
>>
>> 2012/1/3 Shweta1986 <[hidden email]<http://user/SendEmail.jtp?type=node&node=3631490&i=1>
>> >
>>
>>> Hi,
>>>          I am using drools for 2 of our projects. For one of them I have
>>> more than 20K simple rules. But with number of rules I have started seeing
>>> out of memory exceptions and also configuring 20K rules through guvnor is
>>> difficult. Is there an alternative for this? Is there something like  file
>>> upload for drl on guvnor ? Is there a limit on number of rules ?
>>>
>>> Thanks,
>>> Shweta
>>>
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