Are you saying durability is "orthogonal" in that it should be managed outside of the database (in your example, perhaps by copying sqlite files to durable stor

Are you saying durability is "orthogonal" in that it should be managed outside of the database (in your example, perhaps by copying sqlite files to durable storage)? If not, then your proposed design seems pretty different from MemoryDB; yours doesn't persist data in the event of machine loss or reboot.