database-optimizer
Diagnose and resolve database performance issues across PostgreSQL and MySQL with query analysis and optimization strategies.
- Analyzes slow queries using
EXPLAIN ANALYZE, identifies missing indexes, and designs covering index strategies - Provides database-specific tuning guidance for PostgreSQL and MySQL configuration, schema design, and partitioning
- Includes reference materials for query optimization, index strategies, monitoring, and lock contention resolution
- Delivers before/after performance metrics, implementation SQL, and validation queries to measure improvement
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 usage
Core Workflow
- Analyze Performance — Capture baseline metrics and run
EXPLAIN ANALYZEbefore 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
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