CLUSTERCluster topology introspection (virtual-node model over shards).
| 構文 | CLUSTER INFO | NODES | SLOTS | SHARDS | KEYSLOT key | COUNTKEYSINSLOT slot |
| グループ | server |
| 引数の数 | -2 |
| 導入バージョン | 1.0.0 |
| フラグ | readonly, admin |
| 計算量 | INFO / NODES / SLOTS / SHARDS / MYID: O(S). KEYSLOT: O(len(key)). COUNTKEYSINSLOT: O(N/S) |
| Redis 互換性 | differs: a read-only virtual-node topology derived from config (one virtual master per shard) — no gossip, no MEET / FORGET / SETSLOT effect (they reply OK as no-ops), no MIGRATE / ASK, no failover; COUNTKEYSINSLOT counts only the answering shard's keys |