skills/performance-optimization/SKILL.md

---
name: performance-optimization
description: Diagnose and improve frontend, backend, database, network, and runtime performance.
---

# Performance Optimization

Measure before changing. Identify the bottleneck, workload, baseline, target, and regression risk. Check render-blocking work, network chains, caching, query plans, bundle size, memory, concurrency, and expensive loops. Verify the improvement with comparable measurements.