It does indeed share some design elements with Spanner. Also of interest in this space from a heritage perspective is a project called Calvin out of Yale. A cousin of Cockroach built on similar concepts is Apache Kudu, which takes the same ideas and focuses on being an analytics-friendly distributed column store rather than a global OLTP system. It's a very healthy space. Glad to see Cockroach getting some money, but I'll be _astonished_ if they make any headway vs the native cloud players.