This feels too high level. They just sort of explain how they are durable via a log (e.g. RedPanda) and store things in mem. It'd be more interesting if they t

This feels too high level. They just sort of explain how they are durable via a log (e.g. RedPanda) and store things in mem. It'd be more interesting if they talked about what log they used (Kinesis? Something on another DB?), what did they use for a locking service and how did they handle failure cases, etc.