i m a Novice level user of drools and i want to use drools for our firms new projects so, i m evaluating the Drools 5.0 and 5.1 versions so that i can rely on some thing very reliable and secure i have worked out with the Drools5.1 variable persistence strategy and also worked out some examples and i think it is also good to work with a plugabble version of Persistence So now my problem is what to use My own Persistence Mechanism in Drools5.0 or to use Drools5.1 with its provided plugabble Persistence Mechanism ??? one more thing can somebody tell me which books or online documents to refer while using drools 5.1 ??? Thanks in advance...... yours always thankfullllll KiranP -- View this message in context: http://n3.nabble.com/Drools-and-Persistence-How-much-Reliable-and-Secure-... Sent from the Drools - User mailing list archive at Nabble.com.