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7/16/2026
Common Next.js App Router pitfalls and how to avoid them

Common Next.js App Router pitfalls and how to avoid them

Original: Next.js App Router, there are always things that get forgotten. Let's anticipate its errors!

Short summary

A practical guide covering common mistakes developers make with the Next.js App Router, including forgetting Server vs Client Component distinctions, misconfiguring fetch caching behavior, and overlooking loading.tsx and error.tsx boundaries for async server components. The article walks through each pitfall with explanations and corrective patterns. It serves as a checklist for avoiding runtime surprises in App Router projects.

  • •Server vs Client Component confusion is a top source of App Router errors
  • •Fetch caching defaults can cause stale data; understand no-store vs force-cache
  • •Pair async Server Components with loading.tsx and error.tsx boundaries

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