XADD
Append an entry to a stream, with optional trim.
XADD key [NOMKSTREAM] [MAXLEN [=|~] threshold | MINID [=|~] id] id|* field value [field value ...]Complexity
O(log N) to insert; O(N*F) whenever a MAXLEN / MINID clause actually evicts, because the trim triggers a full weight recompute
Complexity and compatibility are read out of kevy's implementation, not copied from Redis's reference. Several genuinely differ.
Redis compatibility
Differs
the approximate-trim '~' is accepted for wire compatibility but always trims exactly, and the LIMIT clause is not parsed
See also
XACKXAUTOCLAIMXCLAIMXDELXGROUPXINFOXLENXPENDINGXRANGEXREADXREADGROUPXREVRANGEXSETIDXTRIM