Horizontal Scaling in ClickHouse Cloud

ClickHouse Cloud has introduced horizontal scaling in private preview, allowing users to control the number of replicas in their service according to workload demands. This feature is available for production instances and can be accessed via ClickHouse Cloud APIs or soon through the cloud console. Horizontal scaling differs from vertical scaling by adding more machines instead of increasing resources on a single machine, providing better fault tolerance and faster scaling. The horizontal scaling capability will improve in the future with self-service options and horizontal autoscaling based on workload demands.