Couchbase Sync Gateway's channels are just slices through the data. The mechanism is internal to the Sync Gateway (you write a JS function that says who can see

Couchbase Sync Gateway's channels are just slices through the data. The mechanism is internal to the Sync Gateway (you write a JS function that says who can see which channels and which channels a doc belongs to.) Replicating clients don't Need to know about this filtering, so channels work great with all flavors of Couch.