This Redis benchmark runs HotKV, Redis, Valkey and Dragonfly as three-node clusters on AWS. Our earlier benchmarks ran each server as one instance on a whole machine. That layout suits HotKV, which uses every core in one process. Redis and Valkey run commands on one thread per process, and they are commonly scaled across cores with many processes, usually as a cluster. So we measured every product the way a cluster deploys it.

In short. In this Redis benchmark on three AWS servers, HotKV had the highest throughput on 8 of 9 commands: 92.3 million GETs per second against 57.3 million for Redis, 52.9 million for Valkey and 22.5 million for Dragonfly. Redis and Valkey were ahead on APPEND. The load generators were near their limit on some commands, so the figures are lower bounds.

Why we ran this Redis benchmark as a cluster

A single-instance benchmark, like the one in our launch article , asks how much one server process can do with a whole machine.…