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<p class=MsoNormal>Hi ,<o:p></o:p></p>
<p class=MsoNormal> I
am using drools 5.0 in application. I am facing performance issues. I am using
drls, rule flows and rule templates.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>My scenario is as follows :-<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Consider there is list of 20 companies.<o:p></o:p></p>
<p class=MsoNormal>There are about 20000 members in each company.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Now I have several rules in which condition is for specific member
and specific company.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>e.g.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>rule 1<o:p></o:p></p>
<p class=MsoNormal> when comp : company<o:p></o:p></p>
<p class=MsoNormal> and
member : Members<o:p></o:p></p>
<p class=MsoNormal>then<o:p></o:p></p>
<p class=MsoNormal>………<o:p></o:p></p>
<p class=MsoNormal>End;<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>So similarly I passed Member list and company list as fact.
But it was time consuming process.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>So I have done one change.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I kept only comp:company in when condition of rule as I
explained above and declare member list as global .<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I created a function in rule in which I am iterating over member
list and doing the same process.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Now this is taking less time.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Now my question is how efficient is this change.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Though we say that when we write specific condition in rule
then it will be fired only in that case. <o:p></o:p></p>
<p class=MsoNormal>But when I use Agenda Event Listener class,<o:p></o:p></p>
<p class=MsoNormal>I come to know one thing that it creates activation-created
for all possible conditions then it will fire activation-Fired for specific condition<o:p></o:p></p>
<p class=MsoNormal>And after that it will cancel all the activations.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>So as I reduced member level fact condition my time is
reduced drastically and performance improved.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>So anybody can suggest me that whether I am on right track
of improving time and performance or not ?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Waiting for reply.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><b>Thanks & Regards,<o:p></o:p></b></p>
<p class=MsoNormal><b>Nikhil S. Kulkarni<o:p></o:p></b></p>
<p class=MsoNormal><b><o:p> </o:p></b></p>
<p class=MsoNormal><o:p> </o:p></p>
</div>
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