Unless you need multiple concurrent writers or some kind of RBAC it's going to be really hard for anything to beat the KP database just because it already takes

Unless you need multiple concurrent writers or some kind of RBAC it's going to be really hard for anything to beat the KP database just because it already takes into things like that into account, along with optional entry history, arbitrary associated values, etc. Been using it both with computers/phones and via programmatic access on cloud storage for years.