XGROUP DELCONSUMER key group consumer
Time complexity: O(1)
ACL categories: @write, @stream, @slow
XGROUP DELCONSUMER deletes the specified consumer from the given consumer <group>. <key> denotes the stream to which the group belongs. Both stream and group must already exist.
Note, however, that any pending messages that the consumer had will become unclaimable after it was deleted. It is strongly recommended, therefore, that any pending messages are claimed or acknowledged prior to deleting the consumer from the group.
Integer reply: the number of pending messages that the consumer had before it was deleted