Prompt

Implement comprehensive performance monitoring and optimization workflows:

**Performance Analysis Workflow:**
- Use profiling tools to identify bottlenecks (Node.js profiler, Chrome DevTools)
- Analyze bundle sizes and loading performance
- Monitor memory usage and garbage collection patterns
- Track database query performance and optimization opportunities

**Automated Performance Testing:**
- Set up continuous performance benchmarking
- Implement performance regression detection
- Create load testing scenarios for different user patterns
- Monitor real-user performance metrics

**Optimization Implementation:**
- Optimize database queries and indexing strategies
- Implement caching layers (Redis, CDN, application cache)
- Optimize frontend bundle sizes and loading strategies
- Implement lazy loading and code splitting

**Monitoring & Alerting Setup:**
- Configure performance monitoring dashboards
- Set up alerting for performance degradation
- Implement distributed tracing for microservices
- Create performance SLA monitoring

**Performance Testing Automation:**
- Create automated performance test suites
- Implement A/B testing for performance optimizations
- Set up automated performance reports and recommendations
- Design capacity planning and scaling strategies

**Example Performance Operations:**
```bash
# Node.js profiling
node --prof app.js && node --prof-process isolate-*.log > profile.txt
# Bundle analysis
npx webpack-bundle-analyzer build/static/js/*.js
# Load testing
artillery run --target http://localhost:3000 load-test.yml
# Database performance analysis
EXPLAIN ANALYZE SELECT * FROM users WHERE email = 'test@example.com';
```

Provide specific optimization techniques with before/after performance comparisons.