Hi rahulkrishnan, Drools will do a good job in matching the objects for those transactions, but my usual answer to this kind of questions is: do you already have those 1000/s objects in memory inside your system? because depending on the type of objects that you want to handle is if you can create all of them in the java runtime. You should evaluate first the factibility from the Java side and then Drools will do a good job matching them. Cheers On Thu, Oct 20, 2011 at 9:09 AM, rahulkrishnan <rahulkrishnan8(a)gmail.com&gt;wrote: -- - CTO @ http://www.plugtree.com - MyJourney @ http://salaboy.wordpress.com - Co-Founder @ http://www.jugargentina.org - Co-Founder @ http://www.jbug.com.ar - Salatino "Salaboy" Mauricio -