EXECExecute every command queued since MULTI.
| 语法 | EXEC |
| 分组 | tx |
| 参数个数 | 1 |
| 起始版本 | 1.0.0 |
| 标志 | readonly, transaction |
| 复杂度 | O(sum of the queued commands' costs); with W watched keys, one extra O(W) pre-check fanned into O(min(W,S)) messages |
| Redis 兼容性 | differs: a MULTI batch spanning several shards is per-shard-atomic, not globally isolated (there is no cross-shard snapshot); a queue-time error aborts the whole batch with EXECABORT, but a runtime error inside EXEC leaves the other commands applied, as in Redis |