A utility for connecting securely to your Cloud SQL instances
...It supports both public and private IP connections and can be deployed in environments such as local machines, virtual machines, Kubernetes clusters, or as a sidecar container.
...Designed for large-scale, multi-tenant architectures, SPQR routes, rewrites, and manages SQL queries to ensure they are executed efficiently across shards. It provides a PostgreSQL-compatible interface so applications can scale transparently without code changes.