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Cloud SQL for PostgreSQL - April 9th, 2025 [Feature]

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## Feature Cloud SQL Enterprise Plus edition now supports a new machine series called the C4A machine series, which provides optimized price-performance and delivers predictable high performance for high demand Cloud SQL workloads. C4A uses a new type of storage called [Hyperdisk Balanced](https://cloud.google.com/sql/docs/postgres/storage-options-overview), and offers up to 72 vCPUs and up to 576 GB memory. The C4A machine series is available in [Preview](https://cloud.google.com/products#product-launch-stages). For more information about the C4A machine series and its availability, see [Machine series overview](https://cloud.google.com/sql/docs/postgres/machine-series-overview). ## Feature [Query insights for Cloud SQL Enterprise Plus edition](https://cloud.google.com/sql/docs/postgres/using-query-insights#query-insights-for-enterprise-plus) is now generally available (GA) for your Cloud SQL Enterprise Plus edition for PostgreSQL instances. Query insights for Cloud SQL Enterprise Plus edition offers fine-grained metrics such as wait events and granular query plan samples for faster root-cause analysis and intelligent index recommendations. For more information, see [Use query insights to improve query performance](https://cloud.google.com/sql/docs/postgres/using-query-insights). ## Feature Cloud SQL for Enterprise Plus edition supports [AI-assisted troubleshooting](https://cloud.google.com/sql/docs/postgres/observe-troubleshoot-with-ai). With AI-assisted troubleshooting, you can resolve complex database performance issues like [slow queries](https://cloud.google.com/sql/docs/postgres/troubleshoot-slow-queries) and [high load](https://cloud.google.com/sql/docs/postgres/troubleshoot-high-database-load) for your instances in a guided manner. To use AI-assisted troubleshooting, you need [Gemini Cloud Assist](https://cloud.google.com/gemini/docs/cloud-assist/overview) and [query insights for Enterprise Plus edition](https://cloud.google.com/sql/docs/postgres/using-query-insights#enable-insights). AI-assisted troubleshooting is available in [Preview](https://cloud.google.com/products#product-launch-stages).