I am new to flink. I am wondering what the best practice is for looking up additional values for entities embedded in an event.
For example, an event might have the engine model #. A metadata store has the typical rpm characteristics of an engine model #; which can be used in a subsequent processing of the event. I call the process of event inflation "event adornment". Currently I use a Map function transformation to do the lookup in the Map function through instatiating a connection in the Map function to the Metadata store per map execution. The thing works; however having 100K connections is not very ideal (assuming 100k eps). Any alternative ideas; given the implementing class has to be Serializable?
