Performance Optimization

Overview

Systematically identify and resolve performance bottlenecks using measurement-driven methodology. This skill enforces a strict MEASURE-IDENTIFY-OPTIMIZE-VERIFY cycle, preventing premature optimization and speculation. Every optimization must produce measurable improvement or be reverted.

Announce at start: "I'm using the performance-optimization skill to diagnose and resolve bottlenecks."

Phase 1: MEASURE (Establish Baseline)

Goal: Capture real metrics before changing anything.

Actions

# Web: Lighthouse CI
npx lighthouse https://your-app.com --output=json --output-path=baseline.json