This would really benefit from a "how does this relate to zookeeper". I think this is an entirely new service, with different technical insides, and trying to provide a higher level solution to what people usually cobble together with ZK.

But I'd be interested in comments from someone knowledgeable.

Edit: I see this is addressed at http://www.serfdom.io/intro/vs-zookeeper.html but it would be nice to have something more "just the facts" rather than arguing the serf is good.