Building Scalable Applications with Next.js 15

Next.js 15 introduces powerful features that make building scalable applications easier than ever. In this article, we'll explore the key improvements and how to leverage them.

Server Components by Default

One of the biggest changes in Next.js 15 is that all components are now Server Components by default. This means:

• Reduced JavaScript bundle size

• Faster initial page loads

• Better SEO performance

• Improved security

// This is a Server Component by default
export default function Page() {
  return 
Hello World
}

Streaming and Suspense

Next.js 15 makes it easier to stream content to users, improving perceived performance:

import { Suspense } from 'react'
export default function Page() {
  return (
    }>
      
    
  )
}

Improved Data Fetching

The new fetch API improvements make data fetching more intuitive:

async function getData() {
  const res = await fetch('https://api.example.com/data', {
    cache: 'force-cache' // or 'no-store'
  })
  return res.json()
}

Best Practices

1. Use Server Components for data fetching 2. Implement Streaming for better UX 3. Optimize Images with next/image 4. Use TypeScript for type safety 5. Implement Error Boundaries for resilience

Conclusion

Next.js 15 provides powerful tools for building scalable applications. By following these patterns and leveraging the new features, you can create fast, reliable web applications.