Interesting notes but I feel like the db itself has been commoditised and the battle is elsewhere now. So anyone building a database engine today, will find out that to make it sustainable they also need an ecosystem on top of it, tooling, community, paid support, active devs, consultants (for which they may have no runway) Finally I find anything that calls itself a database and uses S3 as a backend a bit ridiculous. S3 has eventual consistency so you can’t do the operations that differentiate a database from a file system.