Tag
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.
Valkey 8.1, released on March 31, is protocol and command compatible with Redis 7.x, so most existing clients connect without code changes. Swapping Valkey in for Redis is a realistic move once you plan the cutover: dump and restore is the simplest path, while zero downtime needs asymmetric replication. We moved our first production cluster two weeks ago.
Redis moved to dual SSPL/RSAL licensing in March 2024, no longer meeting the OSI open-source definition. Valkey emerged as a BSD 3-Clause fork backed by AWS, Google Cloud, Oracle, and the Linux Foundation, fully protocol-compatible with Redis 7.2. Migrating is almost always trivial: swap the binary or the Docker image.
