This is essentially the idea of VoltDB [1]: All tables are partitioned and each partition is assigned to a single thread. As long as each query only touches a s

This is essentially the idea of VoltDB [1]: All tables are partitioned and each partition is assigned to a single thread. As long as each query only touches a single partition, you get linear horizontal scalability and serializable isolation. The drawback is that if a query touches multiple partitions, only that one query can be executed on the entire cluster, so this architecture only works for very specific OLTP workloads. [1] https://www.voltdb.com/ https://www.voltdb.com/