SHUTDOWNStop the server process (connection drops without a reply).
| 语法 | SHUTDOWN [NOSAVE|SAVE] |
| 分组 | server |
| 参数个数 | -1 |
| 起始版本 | 1.0.0 |
| 标志 | write, admin |
| 复杂度 | O(1) to trip the stop flag; the drain that follows is O(N) |
| Redis 兼容性 | differs: only SHUTDOWN [NOSAVE|SAVE] parses — NOW, FORCE and ABORT are a syntax error |