ZSCANIterate a sorted set's members and scores (single-batch cursor).
| 语法 | ZSCAN key cursor [MATCH pattern] [COUNT count] |
| 分组 | zset |
| 参数个数 | -3 |
| 起始版本 | 1.0.0 |
| 标志 | readonly |
| 复杂度 | O(N) — the whole set is materialised |
| Redis 兼容性 | differs: not a cursor iterator — every call returns the whole set with cursor 0, and COUNT is parsed then ignored |