Dragonfly uses multi-threading on a single instance, similar in diagram to Redis Cluster, raising the question of their differences.

Redis offers strongly consistent atomic multi-key operations, transactions, and L scripts. Dragonfly supports all of this across multiple threads with full atomicity and consistency.

Dragonfly handles memory capacities transparently, requiring no shard management. Redis Cluster needs memory provisioning for each shard, potentially leading to imbalances and inefficient resource utilization.

Redis Cluster limits memory usage per shard, requiring provisioning based on the highest usage. Multi-key operations are inefficient, increasing management complexity.

Dragonfly provides a simpler and more efficient solution compared to Redis Cluster due to its transparent memory management and multi-threading capabilities.