Next.js Production Deployment Checklist: From Development to Production

Deploying a Next.js application to production requires careful attention to performance, security, and reliability. This checklist covers everything you need to verify before going live.

Performance Optimization

Build & Bundle

• Run next build and check for warnings
• Analyze bundle size with @next/bundle-analyzer
• Ensure no development dependencies in production bundle
• Enable compression (gzip/brotli)
• Verify static pages are being statically generated

Images & Assets

• Use Next.js Image component for automatic optimization
• Implement proper image sizing and responsive images
• Use modern formats (WebP, AVIF) where supported
• Lazy load below-the-fold images
• Set up a CDN for static assets

Caching

• Configure proper Cache-Control headers
• Implement stale-while-revalidate where appropriate
• Use ISR (Incremental Static Regeneration) for dynamic content
• Set up Redis or similar for API response caching

Security Checklist

Headers & Configuration

• Set security headers (CSP, HSTS, X-Frame-Options, etc.)
• Configure CORS properly
• Disable X-Powered-By header
• Implement rate limiting
• Set up HTTPS redirect

Authentication & Authorization

• Secure all API routes with authentication
• Implement CSRF protection
• Use HTTP-only cookies for sessions
• Validate and sanitize all user input
• Implement proper error handling (don't leak info)

Environment Variables

• Move all secrets to environment variables
• Use different values for production
• Never expose server-side secrets to the client
• Verify .env.local is in .gitignore

Reliability & Monitoring

Error Handling

• Set up error tracking (Sentry, etc.)
• Create custom error pages (404, 500)
• Implement error boundaries in React
• Set up alerting for critical errors

Logging

• Implement structured logging
• Log request/response for debugging
• Don't log sensitive data
• Set up log aggregation

Health Checks

• Create a health check endpoint
• Monitor database connectivity
• Check external service dependencies
• Set up uptime monitoring

Database & Data

Database

• Run migrations in production
• Set up connection pooling
• Configure proper indexes
• Set up automated backups
• Test backup restoration

Data Validation

• Validate all API inputs (Zod, etc.)
• Sanitize data before database operations
• Implement proper type checking

Deployment

Infrastructure

• Use a process manager (PM2) or container orchestration
• Configure auto-restart on failure
• Set up horizontal scaling if needed
• Configure proper memory limits

CI/CD

• Automated testing before deployment
• Staged rollouts (staging → production)
• Rollback capability
• Database migration strategy

DNS & SSL

• SSL certificate installed and valid
• Auto-renewal configured
• DNS properly configured
• Test with SSL Labs

Post-Launch

Monitoring

• Set up performance monitoring
• Monitor Core Web Vitals
• Track API response times
• Monitor error rates

Backup & Recovery

• Document recovery procedures
• Test disaster recovery
• Maintain runbooks

Conclusion

This checklist covers the essentials, but every application has unique requirements. Use this as a starting point and customize based on your specific needs. The key is to be systematic—don't rush to launch without verifying each item.

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