We are aiming for production quality WAN deployments. Many of our customers run RethinkDB in the cloud, and the latency between cloud regions can be quite punis

We are aiming for production quality WAN deployments. Many of our customers run RethinkDB in the cloud, and the latency between cloud regions can be quite punishing. We'll document this setup better, but the replication options allow you to safely specify the set of nodes that need sync and async replication (so you can have sync replication for closely connected nodes in a datacenter, and async replication across datacenters).