[nodesocket]

With Google Cloud Functions (they got the name right), you can simply link with a Cloud SQL instance using a special local socket interface provided by Google Cloud[1]. Their documentation provides complete examples as well on how to use global connection pools for MySQL and PostgreSQL.

[1] https://cloud.google.com/functions/docs/sql

[rawrmaan]

Okay, that's a great solution. I actually had no idea that was possible.