[rules-users] optimization on a lot of simple rules

Hi, I am a newbie in drools. There are a lot of simple rules in a scenario. For example rule 1 when Product( id ==1, usage == 1) $decision : Decision() then $decision.setValue(1); end rule 2 when Product( id ==2, usage == 1) $decision : Decision() rule 3 when Product( id ==3, usage == 1) $decision : Decision() rule 4 when Product( id ==4, usage == 1) $decision : Decision() rule 5 when Product( id ==5, usage == 1) $decision : Decision() ...... I have a Product fact whose id = 5 and usage = 1, in my first thinking, only rule 5 is matched, there should be not much more different between 1 rule and a lot of rules in runtime. But the result shows that they are different. More rules will cost more time. If there are 1 thousand rules, some Node and Sink will execute 1 thousand times. My question is how to optimize this scenario? -- View this message in context: http://www.nabble.com/optimization-on-a-lot-of-simple-rules-tp24556724p24... Sent from the drools - user mailing list archive at Nabble.com.