> Any database with built-in replication/consensus (Kafka, Spanner, Dynamo, Cockroach, etc.) is making this same tradeoff and is effectively hitting the network on every storage request.
I don't think this is true. I am not sure about those you described, but say you have PG replicas, you can run query on replica node without hitting some network attached storage. This is obviously true for reads but not for writes.
I don't think this is true. I am not sure about those you described, but say you have PG replicas, you can run query on replica node without hitting some network attached storage. This is obviously true for reads but not for writes.