[rules-users] Drools 5.3 partitioned rule base

[gboro54]

Could you elaborate on that a little more Mark? 


Mark Proctor wrote
> 
> Parition yourself ahead of time. Choose a key that is a true partition 
> of your data, chose the number of partitions, create a kbase per 
> partition and then hash on your inserted data to get the target kbase.
> 
> Mark
> On 02/03/2012 16:23, gboro54 wrote:
>> We are writing a billing system using Drools to evaluate orders placed
>> during
>> the day(this is a month to date process which will run nightly and we
>> will
>> be bringing a real-time solution online later this year after we rewrite
>> the
>> existing). Base fees of these orders can happen in parallel and in no way
>> affect one another, however we have price caps which do depend on the
>> order
>> in which the cap is applied to the order(for certain conditions on an
>> order
>> a surcharge may be created if a cap is applied). My past experience will
>> Drools has been it is quicker to do as much evaluation up front rather
>> then
>> loop of a list of Orders and fire one at a time. However my experience in
>> running Drools with this load is limited(by the end of the month we will
>> have to process 15 million orders).  I am open to suggestions on the best
>> way to do this. Additionally orders are reprocessed each night as orders
>> from a current day may affect the pricing of an order from previous
>> days(i.e
>> a tier rate may apply, etc.)
>>
>>
>> On a side note I found that the issue is a NPE exception one of my rules
>> which only occurs if I partition the rule base(I am not sure why this
>> would
>> make a difference).
>>
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