What sets ScaleOut apart from Redis / Valkey?
The answer is simple — architecture. Redis and Valkey were originally designed to replace a SQL database with a single-server, in-memory data structure store to cache data generated by a local website. Its single-process, single-threaded design focused on combining data structure operations with an in-memory cache. However, the key features required by a distributed cache had to be bolted on later by third parties.
In contrast, ScaleOut StateServer was conceived as a scalable, distributed, in-memory data store with integrated data consistency, sharding, scaling, and high availability. This led to a robust, highly reliable architecture that incorporates the latest industry-leading technology and minimizes management costs.
Recent performance tests show that ScaleOut StateServer runs faster than Redis as a service in Microsoft Azure and Valkey (Serverless) in AWS:

Combined with ScaleOut GeoServer®, ScaleOut StateServer provides high availability across availability zones with no performance penalty. It’s also more cost-effective than software-as-a-service, and you can fully test failure recovery before deployment.