GCP Associate Cloud Engineer Practice Question

A cross-region read replica hosted in europe-west1 reduces network latency for European users because reads can be directed to the replica's private IP or read-only connection string. Cloud SQL read replicas are fully managed; they stay in sync asynchronously and can be promoted to an independent primary instance if the original region suffers an outage, providing a manual disaster-recovery path. Cloud SQL failover replicas support automatic failover but are confined to the same region and are not readable, so they cannot serve low-latency reads. Cloud SQL does not offer an automatic read/write splitting feature. Migrating to Cloud Spanner would address latency and DR but requires a complete platform change and greater operational work than adding a managed replica.