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Next.js 15 Deployment Best Practices on Vercel

Everything you need to know about deploying Next.js 15 applications efficiently on Vercel with optimal performance and reliability.

Sanjay ThakurApril 15, 20267 min read
Next.js 15 Deployment Best Practices on Vercel

Pre-Deployment Checklist

1. Environment Variables

# .env.production
NEXT_PUBLIC_API_URL=https://api.sanjaythakur.com.np
DATABASE_URL=postgresql://...

2. Build Optimization

  • Enable Static Export when possible
  • Use ISR (Incremental Static Regeneration)
  • Optimize images before deployment

3. Security Headers

Configure security headers in next.config.ts:

headers: async () => [
  {
    source: '/(.*)',
    headers: [
      { key: 'X-Content-Type-Options', value: 'nosniff' },
      { key: 'X-Frame-Options', value: 'DENY' },
    ],
  },
]

Performance Optimization

Core Web Vitals

  • LCP (Largest Contentful Paint) < 2.5s
  • FID (First Input Delay) < 100ms
  • CLS (Cumulative Layout Shift) < 0.1

Caching Strategy

  • Static assets: 1 year cache
  • API responses: Based on content freshness
  • HTML pages: 1 day cache

Monitoring & Analytics

Tools to Use

  1. Vercel Analytics
  2. Google Search Console
  3. Lighthouse CI
  4. New Relic APM

Deployment Process

  1. Push to main branch
  2. GitHub Actions run tests
  3. Vercel builds and deploys
  4. Run smoke tests
  5. Monitor performance metrics

Troubleshooting Common Issues

Build Failures

  • Check Node version
  • Clear .next folder
  • Review build logs

Performance Issues

  • Check image optimization
  • Review bundle size
  • Profile with Lighthouse

Resources

Next.jsDeploymentVercelDevOpsProduction