Getting Started with Next.js 15

Next.js 15 brings exciting new features and improvements to the React framework. Let's explore what's new and how to get started.

New Features in Next.js 15

App Router Improvements

The App Router in Next.js 15 has been enhanced with:

• Better performance optimizations
• Improved streaming capabilities
• Enhanced error boundaries

Server Components

Server Components are now more stable and offer:

// Example Server Component
export default async function BlogPost({ params }: { params: { slug: string } }) {
  const post = await getPost(params.slug);
  
  return (
    <article>
      <h1>{post.title}</h1>
      <p>{post.content}</p>
    </article>
  );
}

Turbopack Integration

Turbopack is now the default bundler for development:

• Faster builds - Up to 10x faster than Webpack
• Better HMR - Hot module replacement is nearly instantaneous
• Improved caching - Smart caching reduces rebuild times

Getting Started

To create a new Next.js 15 project:

npx create-next-app@latest my-app
cd my-app
npm run dev

Project Structure

my-app/
├── app/
│   ├── layout.tsx
│   ├── page.tsx
│   └── globals.css
├── public/
├── next.config.js
└── package.json

export const useFetch = () => {}

Best Practices

1. Use Server Components by default - They're more efficient
2. Implement proper error boundaries - Handle errors gracefully
3. Optimize images - Use the next/image component
4. Follow the app directory structure - Keep related files together

Tip: Always test your application in production mode before deploying!

Conclusion

Next.js 15 is a significant step forward in React development. The combination of Server Components, improved App Router, and Turbopack makes it an excellent choice for modern web applications.

Happy coding! 🚀