Creates a consumer in a consumer group.
XGROUP CREATECONSUMER key group consumer
Create a consumer named <consumername> in the consumer group <groupname> of the stream that’s stored at <key>.
Consumers are also created automatically whenever an operation, such as XREADGROUP, references a consumer that doesn’t exist. This is valid for XREADGROUP only when there is data in the stream.
Integer reply: the number of created consumers, either 0 or 1.
O(1)
@slow @stream @write
XACK, XADD, XAUTOCLAIM, XCLAIM, XDEL, XGROUP, XGROUP CREATE, XGROUP DELCONSUMER, XGROUP DESTROY, XGROUP HELP, XGROUP SETID, XINFO, XINFO CONSUMERS, XINFO GROUPS, XINFO HELP, XINFO STREAM, XLEN, XPENDING, XRANGE, XREAD, XREADGROUP, XREVRANGE, XSETID, XTRIM.