On UPN we prove thatwe were processing events too fast compared to the downstream ElasticSearch
In a perfect world, we should handle backpressure in order to adapt event consumption to the downstream components.
In the short term an admin should be able to define the paralelism expected for a given group, in order to reduce overhead.
QOS is currently hard coded via the EventBus::EXECUTION_RATE variable. Allow to configure it in listeners.xml on a per listener basis.
Enable to configure QOS on a per listener basis.