Nextjs

Next.js 15 (App Router) PUDO Checklist

1. PLAN (Architecture & Strategy)

• Rendering Strategy: Define which routes will be Server Components (RSC) and which require Client Components (use client).
• Data Fetching: Plan caching strategies using Next.js 15's native fetch overrides and React.cache.
• Routing Tree: Map out nested layouts, loading.tsx, error.tsx, and not-found.tsx boundaries.
• Mutations: Plan Server Actions for data mutations instead of traditional API routes where possible.

2. UNDERSTAND (Context & Auditing)

• RSC Boundary: Ensure use client directives are pushed as far down the component tree as possible.
• Bundle Analysis: Audit third-party packages to ensure they are compatible with Server Components.
• State Management: Review where global state (Zustand, Redux) is truly needed versus URL state or server state.

3. DEVELOP (Implementation)

• Components: Build Server Components by default. Extract interactivity (hooks, events) into minimal Client Components.
• Forms & Mutations: Use React 19 hooks (useActionState, useFormStatus) combined with Server Actions.
• Streaming: Wrap slow data-fetching components in <Suspense> to stream HTML to the client progressively.
• Assets: Utilize <Image>, <Link>, and next/font for automatic asset optimization.

4. OPTIMIZE (Performance & Review)

• Caching: Verify Data Cache, Full Route Cache, and Router Cache behaviors. Configure revalidate tags correctly.
• SEO & Metadata: Implement dynamic generateMetadata for accurate Open Graph and SEO tags.
• Web Vitals: Check LCP (Largest Contentful Paint) and CLS (Cumulative Layout Shift) metrics.
• Edge Compatibility: Ensure middleware and essential handlers are Edge-runtime compatible if deploying to Vercel/similar.