Multiprocessing Architecture for Keepalive & Backup Processes

[runt1me]

Currently the Keepalive thread is kicked off as just that, a thread. Multiprocessing (vs. multithreading) is probably a more stable and performant approach to having both of these run at once, so we would probably benefit from porting that over.

Estimated story points: 6

[EccentricKnight]

@runt1me o1 had some recommendations for simplifying the threading process that might be worth considering. We can deep dive if we think it's worth considering.