SAVESynchronously snapshot the dataset to disk.
| 構文 | SAVE |
| グループ | server |
| 引数の数 | 1 |
| 導入バージョン | 1.0.0 |
| フラグ | write, admin |
| 計算量 | O(S) fan-out; O(N/S) copy-on-write freeze per shard |
| Redis 互換性 | differs: SAVE is no longer synchronous-until-durable — it freezes a copy-on-write view and replies OK immediately, so 'SAVE returned, therefore the dump is safe to copy' no longer holds |