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Performance Optimization Tips

Last Updated: 7/2/2026

Introduction to Performance Optimization

Performance optimization is an ongoing process of identifying bottlenecks and improving your application’s speed and efficiency.

Frontend Optimization

Asset Optimization

  • Minify JavaScript and CSS files
  • Compress images (use WebP format when possible)
  • Implement lazy loading for images and components
  • Use CDNs for static assets

Rendering Performance

  • Minimize DOM manipulations
  • Use virtual scrolling for long lists
  • Implement code splitting
  • Optimize React re-renders with memoization

Backend Optimization

Database Queries

  • Add appropriate indexes
  • Use query caching
  • Avoid N+1 query problems
  • Use connection pooling

Caching Strategies

  • Application-level caching (Redis, Memcached)
  • HTTP caching headers
  • Database query result caching
  • CDN caching for static content

Monitoring and Measurement

You can’t optimize what you don’t measure:

  • Use performance profiling tools
  • Monitor real user metrics (RUM)
  • Set up performance budgets
  • Track Core Web Vitals

Quick Wins

  1. Enable gzip/brotli compression
  2. Implement HTTP/2
  3. Reduce third-party scripts
  4. Optimize critical rendering path
  5. Use service workers for offline capability
Error Handling Strategies