REPL.TOKENkevy extension: mint a read-your-writes token — per-shard [generation, offset] pairs (a primary reports its live feed tail; a replica its applied positions).
| 语法 | REPL.TOKEN |
| 分组 | replication |
| 参数个数 | 1 |
| 起始版本 | 3.0.0 |
| 标志 | readonly, extension |
| 复杂度 | O(S) — one (generation, offset) pair per shard |
| Redis 兼容性 | kevy-only: the read-your-writes token; the nearest Redis concept is master_repl_offset, which is not a resumable per-shard cursor |