Tools
Valkey 9.1 vs Redis 8: how much memory it saves per key, measured
Valkey 9.1.2 used 62.9 bytes per key with 5 million short-value keys, against 70.9 for Valkey 9.0.6 and 81.5 for Redis 8.10.2. The saving disappears with values of 100 bytes or more. And Valkey 9.1 refuses the RDB files of Redis 7.4 and Redis 8.