I have been looking at the following scenario 1. Alerts are generated by an enterprise system and Sent to the Rule Engine in batches. 2. I must check the alert batch for possible correlation between the alerts based on Rules defined in my Rule file (.drl) *3. Verify if any Correlation already exists for the alerts received if yes update that correlation with fresh alert data* 4. if no correlation exists i do nothing. 5. If a Correlation exists and No correlation is present in RE representing the same for those group of alerts I create a New Correlation and update the RE. *Steps 1 to 3 are repeated every 15 seconds in the system,* How do I keep the Objects in Drools to keep checking for Correlation scenarios as and when I receive data from the enterprise system at regular intervals so that i can update existing correlation as metioned at *Step 3* Any approach or suggestion would be very helpful. ----- Thanks for the support ...!!! VR -- View this message in context: http://drools.46999.n3.nabble.com/How-to-Compute-against-WorkingMemory-in... Sent from the Drools: User forum mailing list archive at Nabble.com.