[rules-users] Drools 5.3 partitioned rule base

[Mark Proctor]

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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