Gotcha. That sounds solid to me; would be a good explanation to put in your feature list.

Sounds like your coordinators are authoritative masters for transaction ordering. Does that imply a single-machine limit to throughput in a given dc? Presumably the ordering process is much less expensive than the kv store itself, so this might not be a practical issue.

What happens when nodes are asymmetrically partitioned from the coordinator and peers? E.g. a node is unreachable by a peer, but reachable by a coordinator, or vice versa?