React Server Components in Production: What We Learned After Migrating a Client Dashboard
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Real-world RSC migration lessons with performance numbers are deeply technical and actionable for modern web dev.
Migrating a production analytics dashboard from Next.js 12 Pages Router to Next.js 14 App Router with React Server Components reduced JavaScript bundles from 400KB to 280KB gzipped, but required strict architectural patterns to avoid hydration mismatches. The team adopted a rule where server components exclusively handle data fetching and pass results as props to client components, eliminating 80% of hydration bugs. Chart libraries like Recharts and D3 still require client-side rendering with dynamic imports and SSR disabled, limiting bundle size reductions to 30% rather than the 50% often promised.