Performance Optimization Guide

This workspace includes comprehensive performance optimizations for build times, test execution, and development workflows.

⚡ Quick Performance Commands

Fast Development Workflows

# Optimized development with parallel servers
npm run dev:optimized

# Super-fast development startup (skip initial build)
npm run dev:fast

# Quick test validation
npm run quick:test

# Fast parallel builds
npm run build:fast

Performance Analysis

# Full performance report
npm run perf:full-report

# Build time measurement
npm run perf:build-time

# Test execution timing
npm run perf:test-time

# Cache validation
npm run cache:validate

Memory-Optimized Operations

# Large-scale builds with increased memory
npm run build:memory-efficient

# Memory-efficient testing for large suites
npm run test:memory-efficient

🏗️ Build Performance Features

Parallel Build System

• TypeScript + Jekyll Parallel: Build both systems simultaneously
• Color-coded Output: Easy identification of build stages
• Memory Optimization: 4GB heap allocation for large projects
• CI/CD Ready: Optimized workers and timeouts

Cache Optimization

• TypeScript Incremental: Faster rebuilds with tsbuildinfo
• Jekyll Cache: Persistent .jekyll-cache directory
• Playwright Browser Cache: Shared browser installations
• Smart Cleanup: Performance-aware cache management

🧪 Test Performance Enhancements

Playwright Optimization

• Dynamic Workers: 6 workers locally, 3 in CI
• Intelligent Timeouts: 15s timeout for faster feedback
• Memory Efficient: Optimized trace and video recording
• Project Separation: Fast smoke tests vs comprehensive suites

Test Execution Strategy

# Smoke tests for quick validation (Chromium only)
npm run test:smoke

# Memory-optimized test execution
npm run test:memory-efficient

# CI-optimized test suite
npm run test:ci

⚙️ Configuration Files

TypeScript Performance

• Main Config: ES2022 target with isolatedModules
• Performance Config: tsconfig.performance.json for development
• Skip Library Checks: Faster compilation times

Jekyll Optimization

• Development Config: _config_dev.yml - Fast iteration
• Production Config: _config_prod.yml - Full optimization
• Incremental Builds: Enabled with proper cache management

Playwright Enhancement

• Multi-Project Setup: Separate configs for different test types
• Resource Optimization: Smart video/trace collection
• Browser Management: Efficient browser installation and updates

📊 Performance Monitoring

Build Analysis

# Measure build performance
npm run build:measure

# Generate optimization recommendations
npm run perf:check

# Cache performance analysis
npm run cache:performance

Performance Metrics

• Build Time Tracking: Automatic timing with recommendations
• Memory Usage: Monitor and optimize resource consumption
• Cache Effectiveness: Validation and optimization tools

🚀 CI/CD Performance

GitHub Actions Optimization

• Multi-level Caching: npm, Playwright, Jekyll, TypeScript
• Parallel Execution: Optimized job dependencies
• Performance Reporting: Automated performance summaries

Cache Strategy

# Example cache configuration
- uses: actions/cache@v3
  with:
    path: |
      ~/.npm
      ~/.cache/ms-playwright
      docs/.jekyll-cache
      tsconfig.tsbuildinfo

💡 Performance Best Practices

Development Workflow

1. Use Optimized Commands: dev:optimized for daily development
2. Cache Management: Regular cache:validate checks
3. Memory Awareness: Use memory-efficient commands for large operations
4. Test Strategy: Use quick:test for rapid validation

Build Optimization

1. Parallel Builds: Always use build:parallel or build:fast
2. Environment Specific: Use appropriate dev/prod configurations
3. Cache Utilization: Preserve cache directories between builds
4. Resource Monitoring: Regular performance check-ups

Testing Performance

1. Selective Testing: Use project-specific test runs
2. Memory Management: Monitor test suite memory usage
3. Browser Optimization: Efficient browser management scripts
4. CI Efficiency: Optimized worker and timeout configurations

🎯 Expected Performance Gains

🔧 Troubleshooting Performance

Common Issues

# Clear all caches if performance degrades
npm run cleanup:performance

# Validate configuration
npm run cache:validate

# Check for memory issues
npm run perf:check

# Regenerate caches
npm run cache:force-rebuild

Performance Debugging

1. Build Analysis: Use build:measure for timing details
2. Memory Profiling: Monitor heap usage during operations
3. Cache Issues: Validate cache effectiveness with tools
4. Test Performance: Analyze test execution patterns

This performance framework ensures optimal development velocity while maintaining production-ready quality standards.