Your e-commerce application uses Cloud SQL for PostgreSQL. During peak shopping hours, the database CPU hits 95% due to a massive number of read queries from the product catalog, causing latency. Write operations (orders) remain low. How should you optimize the database architecture?

Cloud SQL Read Replicas are designed specifically to scale out read-heavy workloads. The primary instance replicates data asynchronously to the read replica. You then update your application logic to route read queries (like browsing the product catalog) to the replica, freeing up the primary instance's CPU to handle write queries (like placing orders).