MSETSet multiple key/value pairs atomically per shard.
| 语法 | MSET key value [key value ...] |
| 分组 | string |
| 参数个数 | -3 |
| 起始版本 | 1.0.0 |
| 标志 | write |
| 复杂度 | O(N) pairs, one O(1) SET each |
| Redis 兼容性 | differs: atomic only per shard — pairs are split by key and applied shard-by-shard with no cross-shard barrier, so a reader can observe some pairs written and others not; Redis MSET is globally atomic |