Drools rule engine
Rule systems are able to solve hard problems by providing the detail of the arrival of the solution and also why every decision was been taken along the way.
Major benefits of Rule Engine are: Logic & Data Separation
To break down the domain objects from business rules could make it possible to easily maintain the application. This is possible because it may shield from the future alterations. Speed & Scalability
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Drools rule engine offers these advantages. It separates conditions and applications They are present in separated filesDifferent people groups can modify themAfter changing a rule, recompilation is not needed. Redeployment is also not needed in the whole application.To control an application’s flow, put rules at one placeAll the complexed statements can be replaced by rules in an easier or understandable way Rule language is not tough to be learnt.An