A list of hosts:port separated by ';' to the administration port of
the couchbase cluster. (ex: "host1;host2:9000;host3" would try to connect to host1 on port 8091, if that fails it'll connect to host2
on port 9000 etc). The hostname may also be specified as a URI looking like:
http://localhost:8091/pools
The type of the connection: * ConnectionType.BUCKET - NULL for bucket
means "default" bucket * ConnectionType.CLUSTER - the bucket argument ignored and all data commands will return LCB_NOT_SUPPORTED