Building Scalable APIs with Next.js 14

Next.js 14 brings significant improvements to API development with the App Router.

Why Next.js for APIs?

Next.js provides a full-stack framework that allows you to build both frontend and backend in a single codebase.

Project Structure

A well-organized API starts with a clean project structure:

/app/api
  /users
    route.ts
  /projects
    route.ts
/services
  user.service.ts
  project.service.ts
/lib
  prisma.ts

Service Layer Pattern

The service layer pattern separates business logic from route handlers:

export async function getAllUsers() {
  return prisma.user.findMany()
}

Error Handling

Proper error handling is crucial for production APIs.

Conclusion

Next.js 14 provides excellent tools for building production-ready APIs.