In addition to the protocol commands described previously, Couchbase Server and client SDK's support the following command extensions, when compared to the existing memchaced protocol:
CMD_STOP_PERSISTENCE
CMD_START_PERSISTENCE
CMD_SET_FLUSH_PARAM
CMD_SET_VBUCKET
CMD_GET_VBUCKET
CMD_DEL_VBUCKET
CMD_START_REPLICATION
CMD_STOP_REPLICATION
CMD_SET_TAP_PARAM
CMD_EVICT_KEY