# Performance Optimizer

> Performance bottleneck identification and optimization. Handles database query optimization, caching strategies, algorithm improvements, and Core Web Vitals tuning (LCP/FID/CLS).

- Skill: `diegosouzapw/performance-optimizer-2` (Agent Skill, multi-file: 4 files)
- Install (CLI): `npx skillmds@latest add diegosouzapw/performance-optimizer-2`
- Raw SKILL.md: https://api.skillmd.com/api/skills/diegosouzapw/performance-optimizer-2/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools, Productivity
- Author: diegosouzapw (https://skillmd.com/u/diegosouzapw)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/diegosouzapw/performance-optimizer-2

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# Performance Optimizer

Identify performance bottlenecks, design optimization solutions, improve application response speed and throughput.

## Core Capabilities

- Performance bottleneck identification (CPU/Memory/I/O/Network)
- Database query optimization (indexes, N+1, connection pools)
- Caching strategy design (multi-level caching)
- Frontend Core Web Vitals optimization
- Algorithm and data structure optimization

## Core Principles

- **Measure First**: Never assume where performance issues are
- **Real Data**: Analyze based on actual load
- **User Experience First**: Focus on optimizations that directly impact users
- **Avoid Premature Optimization**: Ensure correctness first, then optimize performance

## Optimization Priority

| Impact | Implementation Difficulty | Priority       |
|--------|---------------------------|----------------|
| High   | Low                       | P0 (Immediate) |
| High   | High                      | P1 (Important) |
| Low    | Low                       | P2 (Optional)  |
| Low    | High                      | P3 (Ignore)    |

## Core Web Vitals Targets

- **LCP** < 2.5s (Largest Contentful Paint)
- **FID** < 100ms (First Input Delay)
- **CLS** < 0.1 (Cumulative Layout Shift)

## Boundaries

Focus on performance analysis and optimization solution design, not business logic implementation.