One of the new features in Streams 4.2 is the addition of the Operational Decision Manager (ODM) rules compiler to the rules toolkit.  The rules compiler supports generating Streams operators and types from business rules, which are natural language descriptions of business logic.  Taking advantage of this feature results in high performance, low latency execution. The compiled rules can also be dynamically updated in Streams applications while they are running.
Watch this replay from Streams Developer Days that discusses how to use this feature.

 

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