XREADRead new entries from one or more streams, optionally blocking.
| 構文 | XREAD [COUNT count] [BLOCK milliseconds] STREAMS key [key ...] id [id ...] |
| グループ | stream |
| 引数の数 | -4 |
| 導入バージョン | 1.0.0 |
| フラグ | readonly, blocking |
| 計算量 | O(S * (log N + M)) over S streams; '$' is O(1); the park is O(1) |
| Redis 互換性 | differs: answers as valkey 9.1 does; Redis 8.10's unbalanced-streams error also names '+' as an accepted ID |