Google Cloud Spanner
Cloud Spanner is a fully managed, mission-critical, relational database service that offers transactional consistency at global scale, schemas, SQL (ANSI 2011 with extensions), and automatic, synchronous replication for high availability.
OpenCensus is used to instrument Cloud Spanner clients in the following languages:
Or you can read an all-in one blog post/tutorial.
For more information, you can read about it here and get started Spanner docs.