[nvanbenschoten]

> Cockroach only allow SERIALIZABLE transactions so the unviability of SERIALIZABLE seems questionable.

We've actually been hard at work on adding Read Committed and Repeatable Read isolation into CockroachDB. The risks of weak isolation levels are real, but they do have a role in SQL databases. We did our best to avoid the pitfalls and inconsistencies of MySQL and even PostgreSQL by defining clear read snapshot scopes (statement vs. transaction).

The preview release for both will be dropping in Jan. Some links if you're interested: - RFC: https://github.com/cockroachdb/cockroach/blob/master/docs/RF... - Hermitage test: https://github.com/ept/hermitage/blob/master/cockroachdb.md