Hello,
Couchbase does not have the equivalent of “changes” feed. The observe is not the same thing.
You can use the TAP Protocol to listen to some specific keys event but once again it is not exactly the same thing (since you will received message for replicas too) see http://www.couchbase.com/wiki/display/couchbase/TAP+Protocol
Note: This protocol is not implemented in the Node library.
Regards
Tug
@tgrall