Production database slowdowns rarely stem from a lack of hardware. They originate from unindexed queries, thread lock contention, and skewed data layouts that silently exhaust resources. In this course, you resolve high-impact database bottlenecks on Google Cloud before they degrade user applications. You will diagnose root-cause wait states using Cloud SQL Query Insights, replace slow table scans with targeted composite indexes, eliminate single-split write bottlenecks using Key Visualizer, and execute safe downscaling sequences to right-size instances without disrupting live traffic.