Building Production Apps with Next.js 15

Next.js 15 represents a major leap forward for React application development. With Turbopack, improved App Router, and React 19 support, it's now the go-to framework for production applications.

Key Features in Next.js 15

Turbopack (Stable)

The Rust-based bundler is now production-ready:

npm run dev --turbo

Benefits include:

• 10x faster cold starts
• Sub-second HMR updates
• Lower memory usage

React 19 Integration

Next.js 15 fully supports React 19, enabling:

• Server Components by default
• Improved Suspense boundaries
• Enhanced concurrent rendering

Performance Optimization

Image Optimization

import Image from 'next/image';

export function HeroImage() {
  return (
    <Image
      src="/hero.jpg"
      alt="Hero"
      width={1920}
      height={1080}
      priority
      placeholder="blur"
    />
  );
}

Font Loading

import { Inter } from 'next/font/google';

const inter = Inter({ subsets: ['latin'] });

SEO Best Practices

Metadata API

export const metadata = {
  title: 'My App',
  description: 'Built with Next.js 15',
  openGraph: {
    images: ['/og-image.jpg'],
  },
};

Sitemap Generation

// app/sitemap.ts
export default function sitemap() {
  return [
    { url: 'https://example.com', lastModified: new Date() },
    { url: 'https://example.com/about', lastModified: new Date() },
  ];
}

Deployment Checklist

Before deploying to production:

1. Run npm run build locally
2. Test with npm run start
3. Verify Core Web Vitals
4. Check mobile responsiveness
5. Validate SEO metadata

Conclusion

Next.js 15 makes building production-ready applications faster and more enjoyable than ever. At NTP Technology, we use Next.js 15 for all our web projects to ensure optimal performance and developer experience.

Need help with your Next.js project? Let's talk.