XREADGROUP
Read stream entries as a consumer-group member, optionally blocking.
XREADGROUP GROUP group consumer [COUNT count] [BLOCK milliseconds] [NOACK] STREAMS key [key ...] id [id ...]Complexity
'>' form: O(log N + U + M) — COUNT does NOT bound the scan, the entire undelivered tail is materialised first. Replay form: O(log P + K)
Complexity and compatibility are read out of kevy's implementation, not copied from Redis's reference. Several genuinely differ.
Redis compatibility
Differs
COUNT is parsed but does not bound the '>' scan
See also
XACKXADDXAUTOCLAIMXCLAIMXDELXGROUPXINFOXLENXPENDINGXRANGEXREADXREVRANGEXSETIDXTRIM