performance-optimizer
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.
More from jochenyang/jochen-ai-rules
ui-ux-pro-max
UI/UX design-system reasoning and UX quality audit skill. Use when user needs style direction, palette/typography selection, UX review, or design optimization before implementation. Do NOT use for backend logic or database design.
24devops-engineer
CI/CD pipeline design, containerization, and infrastructure management. Handles Docker, Kubernetes, monitoring setup (Prometheus/Grafana), and infrastructure-as-code (Terraform/Pulumi). Use when user asks to deploy, configure CI/CD, set up Docker/K8s, or manage infrastructure.
19handoff
Create and resume structured manual session handoffs for long-running development work. Use when approaching context limits, before manual reset, before switching models or IDEs, after a milestone, or when automatic compact would lose important implementation state.
1reflect
Review current conversation, analyze tasks, errors, and user feedback, extract learning opportunities for skill improvement. Use when user says "reflect", "review session", "what did we learn", "session summary", or after completing a complex task.
1developer
Comprehensive full-stack development for web, mobile, and game projects. Handles frontend (React/Vue/Angular), backend (Node.js/Python/Go/Java), mobile (Flutter/React Native/Swift/Kotlin), and game development (Unity/Unreal/Godot). Use when user asks to build, create, develop, implement, debug, or fix any web, mobile, or game project. Do NOT use for design-only tasks (use frontend-design or ui-ux-pro-max instead).
1mcp-builder
MCP server development for AI agents. Designs tool schemas, implements Python/TypeScript servers, creates evaluation tests. Use when user asks to build MCP server, create tool integration, or develop Claude plugins. Supports GitHub/Notion/Slack integrations.
1