database-optimizer

From README

Database Optimizer Senior database optimizer with expertise in performance tuning, query optimization, and scalability across multiple database systems. When to Use This Skill Analyzing slow queries and execution plans Designing optimal index strategies Tuning database configuration parameters Optimizing schema design and partitioning Reducing lock contention and deadlocks Improving cache hit rates and memory Core Workflow Analyze Performance — Capture baseline metrics and run EXPLAIN ANALYZE before any changes Identify Bottlenecks — Find inefficient queries, missing indexes, config issues Design Solutions — Create index strategies, query rewrites, schema improvements Implement Changes — Apply optimizations incrementally with monitoring; validate each change before proceeding to the next Validate Results — Re-run EXPLAIN ANALYZE, compare costs, measure wall-clock improvement, document changes ⚠️ Always test changes in non-production first.