The Drools rules engine provides a very powerful business rule processing capability. However, implementing even the most simple of use cases may require considerable client side scaffolding code. This post presents a pattern on how Drools services can be consumed and produced as a very simple service – really simple rules service (RSRS). The method was used in the implementation of the Drools CEP package for R as described at CEP made EasyR A comprehensive use case example of this is described at Weight Watcher. RSRS is even easier on OpenShift, check out Decision Service Made Easy with OpenShift .
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