MGETReturn the values of multiple keys (cross-shard gather).
| 语法 | MGET key [key ...] |
| 分组 | string |
| 参数个数 | -2 |
| 起始版本 | 1.0.0 |
| 标志 | readonly |
| 复杂度 | O(N) keys, one O(1) probe each on the owning shard |
| Redis 兼容性 | differs: keys are grouped by shard and each shard is probed independently, so the reply is not a point-in-time snapshot across shards |