Getting Started with Next.js 15

Next.js 15 brings exciting new features that make building web applications easier than ever.

Installation

First, create a new Next.js project:

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

Key Features

1. App Router

The App Router is the recommended way to build Next.js apps:

• Server Components by default
• Nested layouts for better UI composition
• Loading states built-in

2. Server Actions

Server Actions let you run server code directly from client components:

'use server'

export async function createUser(formData: FormData) {
  const name = formData.get('name')
  // Save to database
  return { success: true }
}

3. Data Flow

Here's how data flows in a Next.js app:

graph LR
    A[Client] -->|Request| B[Next.js Server]
    B -->|Fetch| C[API/Database]
    C -->|Response| B
    B -->|HTML/Data| A

Best Practices

Always use Server Components when possible for better performance.

Key points to remember:

1. Use Server Components by default
2. Only add 'use client' when needed
3. Keep sensitive logic on the server

Conclusion

Next.js 15 makes full-stack development simple and efficient. Start building today!