AddEvents non-blocking function to add events and return response.

AddImpressions non-blocking function to add impressions and return response.

InitializeEventWorkers initializes event workers.

InitializeImpressionsCountRecorder initializes impressionscount recorder.

InitializeImpressionWorkers initializes impression workers.

PostImpressionsCount sends data to split.

StopEventsRecording stops all tasks related to event submission.

StopImpressionsRecording stops all tasks related to impression submission.