https://cloudplatform.googleblog.com/2017/02/introducing-Cloud-Spanner-a-global-database-service-for-mission-critical-applications.html

Looks interesting. A bit on the pricey side though maybe (https://cloud.google.com/spanner/)

Nice though, apparently only offers serializable isolation level.

https://cloud.google.com/spanner/docs/transactions

(I’ve long been of the opinion that serializable should be the default full stop.)