This article is a practical, production-minded guide to structuring Next.js App Router projects that stay fast and maintainable.
1) App Router architecture that scales
A scalable App Router setup starts with boundaries: route groups for UI, feature folders for domain logic, and shared UI primitives.
Use route groups for layout variations: (marketing), (app), (auth).
Keep feature code near routes when it is route-specific.
Centralize UI building blocks into a component system.
Cached fetch example
export async function getPosts(){ const res = await fetch("https://api.example.com/posts", { next: { revalidate: 3600 } }); return res.json(); }Want this level of engineering on your product?
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