Latest posts
Why 43% of mobile sites still fail INP two years after it became a Core Web Vital - and how to fix it. Covers root cause breakdown, scheduler.yield(), React Server Components, the React 19 Compiler, and Next.js-specific patterns with production benchmark data.
A deep dive into React Server Components - the rendering model that eliminates client JavaScript for server-only trees. Covers the RSC wire format, component boundary semantics, async data fetching, Suspense streaming, Partial Prerendering, and the React 19 Compiler - with real bundle-size benchmarks and a practical decision framework.
An in-depth comparison of the two main headless Shopify storefront architectures. Covers runtime model, data layer, caching strategy, bundle size, performance benchmarks (LCP/INP/CLS), total cost of ownership, vendor lock-in risk, and a clear decision framework for engineering teams choosing between Hydrogen's Shopify-native depth and Next.js Commerce's composable portability.
A practical migration guide for teams moving production Next.js apps from Pages Router to App Router. Covers the architectural differences, incremental migration strategy, data fetching transformation (getServerSideProps/getStaticProps → RSC), API Routes → Route Handlers, common pitfalls at each phase, measured performance outcomes, and a decision framework for when migration is actually worth it.
A deep dive into Next.js Partial Prerendering in production. Covers the two-phase response mechanism (static shell from CDN + streaming dynamic holes), Suspense boundary placement rules, PPR's interaction with the Full Route Cache, Suspense fallback design for zero CLS, measured TTFB/LCP outcomes, comparison against ISR+CSR and full SSR, known limitations, and the decision framework for when PPR is the right architecture choice.
A deep dive into React 19's five new primitives: useOptimistic (concurrent optimistic state with automatic rollback), use() (conditional Promise and Context reading), Server Actions ('use server' RPC mechanism and Progressive Enhancement), useActionState (state threading pattern replacing useFormState), and useFormStatus. Covers the action-based mutation architecture that replaces Redux/Zustand for server mutations, plus the ref-as-prop and Context-as-provider syntax changes.
A practical guide to web accessibility from a production frontend perspective: how screen readers interpret the DOM, what WCAG 2.2 requires in concrete terms, the keyboard navigation patterns that break most often, and the testing workflow that catches real issues before users do. Covers ARIA roles, focus management, live regions, accessible component patterns for modals and forms, and the toolchain from axe-core to VoiceOver.