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Feature Request
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Resolution: Won't Fix
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L3 - Default
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Camunda is very good in running thousands of process instances in parallel. What's missing is the coordination, i.e. starting, waiting for and synchronization among thousands of instances.
The focus of discussion should be on MI-CallActivities and Signals with high cardinalities. Other types of MI tasks should remain untouched because one could put them in a subprocess and call them via a call activity.
The use case for users is not that they run old-fashioned nightly batches on data entered by users during the day. The users where we encountered this issue had large cardinalities in there normal business e.g. large bulk orders with many items or the recalculation of insurance policies for many or all customers on a certain date when new regulation or conditions become effective. They are not abusing the engine for technicalities but simply perform Business-IT Alignment in their domain.