Nextjs Fullstack Patterns

Next.js Fullstack Patterns

Building fullstack applications with Next.js — from App Router and Server Components through data fetching, middleware, and deployment.

When to Use

• Building fullstack React applications with SSR/SSG
• Using Next.js App Router (13+)
• Server Components and Server Actions
• API routes and middleware

Next.js Patterns

// Server Component with data fetching
async function UserPage({ params }: { params: { id: string } }) {
  const user = await fetchUser(params.id); // Direct fetch, no useEffect
  return <div>{user.name}</div>;
}

// Server Action for form handling
'use server';
async function createUser(formData: FormData) {
  const name = formData.get('name');
  await db.user.create({ data: { name } });
  revalidatePath('/users');
}

// Route Handler (API route)
export async function GET(request: Request) {
  const users = await db.user.findMany();
  return Response.json(users);
}

Verification Checklist

• Server Components default, Client Components opt-in
• Data fetching at component level (no waterfall)
• Server Actions for mutations
• ISR for static + dynamic hybrid
• Middleware for auth and redirects
• Route groups for layout organization