Scaling Sync Gateway

As of the alpha milestone (April 2013) the gateway isn't yet scaleable. The current architecture requires that there be only one gateway process talking to a bucket, and all clients have to talk to that gateway. (Of course, the Couchbase cluster serving that bucket can be scaled up.)

We are starting to design how to make the gateway able to run as a cluster. Some sketchy documents are available, which should not be taken as holy writ: