> Well that's just dqlite.

Far from it, as now your not just dealing with network but also with raft consensus... So each write is not just a network trip, its also 2x acknowledging. And your reads go over the leader, what can mean if somebody accessed node 1 app but node 2 is the leader, well, ...

Its slower on reads and writes, then just replications that PostgreSQL does. And i do not mean async but even sync PostgreSQL will be faster.

The reason dqlite exists is because canonical needed something to synchronize their virtualization cluster (lxd), and they needed a db with raft consensus, that is a lib (as not a full blown server install like postgres). Performance was not the focus and its usage is totally different then most people needs here.