Why does the "Sensor Queued History" graph only have recent data?

Products

• Carbon Black EDR (formerly Cb Response)

Issue/Introduction

Why does the "Sensor Queued History" graph in the Sensor Details page only have recent data?

Environment

• EDR Server: 7.5.0 and Higher

Resolution

• In previous (7.4.2 and lower) EDR server versions, the "Sensor Queued History" info was implemented as a StoredObject in a postgres table and that this data was purged after 12 hours in an earlier attempt to increase UI responsiveness and sensor checking performance.
• With 7.5.0 and higher EDR server, they converted the SensorBacklogCache implementation to be a CachedObject instead of a StoredObject, and then some more perf improvements were introduced, but this work results in the table only showing data from the last sensor checkin.