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restcouchbasecouchbase-sync-gateway

How does Couchbase Sync Gateway get Couchbase Server changes?

What mechanism does Couchbase Sync Gateway use for getting the database changes in the couchbase server.

  1. Does it do a long Poll or create a websocket connection ?
  2. Or does is frequently invokes Couchbase server REST API ? If so then which REST API and what are the queries that it sends in the HTTP request for that REST API?
Solution

  • Neither - it uses DCP (the same underlying protocol used by replication and XDCR) to subscribe to updates from Couchbase Server.