There's a few other research projects based on the same concept of a distributed log and an explicit sequencer such as Corfu: https://github.com/CorfuDB/CorfuDB

There's a few other research projects based on the same concept of a distributed log and an explicit sequencer such as Corfu: https://github.com/CorfuDB/CorfuDB https://github.com/CorfuDB/CorfuDB As far as why it's not more prevalent, all of this research is work from the last decade or less, and it takes a long time to develop a database ready for production use.