The author of the text compared the performance of Aerospike to Redis by running an "unbenchmark" with Redis Cloud software without any optimizations. The unbenchmark was run in a standard service environment on a noisy EC2 network, and it scored over 1.2 million TPS. The author then requested a full-blown benchmark with all optimizations included, which is currently in the backlog. The text also discusses the implementation of sharding in Redis clusters, including client-side, proxy-based solutions, and clustering. It mentions that Redis Cloud uses its own implementation of a Redis cluster, which has been in use in production for over two years, and that users can create sharded databases with a standard policy or a custom policy using regular expression rules. The author invites readers to follow the Redis blog for further announcements and technical details.