I have never examined this in any detail before. It looks far easier than the mass majority of clustered database architectures.

https://rqlite.io/

using it for control layer pretty happy so far

can you query the local rqlite, or do you always have to go to the leader?

docs - Queries, by default, are also serviced by the cluster Leader.

it is great, fun, easy.

How long have you been using it? I've always been disappointed with similar systems, etcd including.