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Architecture Notes for High-Stakes Frontend Teams

Practical breakdowns from delivery work: performance recovery, SEO architecture, release governance, and conversion-critical frontend decisions.

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Practical articles

•13 min read

Core Web Vitals Assessment: Failed - How to Read the Report and Fix the Right Thing (2026)

Search Console reports a failed Core Web Vitals assessment and PageSpeed Insights shows a green 95 on the same page. Both are accurate, and the gap between them is where most teams lose a month fixing the wrong thing. A practical guide to reading the report: what the assessment measures, which of LCP, INP and CLS actually failed, why the status lags your deployment by weeks, what the failure really costs in rankings versus revenue, and which fixes belong to your team rather than an engineer.

  • Core Web Vitals
  • LCP
  • INP
  • CLS
  • SEO
  • Performance
•17 min read

Shopify Hydrogen vs Next.js Commerce: Which Architecture is Right for Your Storefront in 2026

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.

  • eCommerce
  • Next.js
  • Shopify
  • Architecture
  • Performance
  • Engineering
•15 min read

Next.js App Router Migration from Pages Router: The Complete Practical Guide (2026)

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.

  • Next.js
  • Architecture
  • Migration
  • React
  • Performance
  • Engineering
•17 min read

Partial Prerendering (PPR) in Production: Architecture Patterns (2026 Edition)

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.

  • Next.js
  • Performance
  • PPR
  • Architecture
  • Core Web Vitals
  • Engineering
•18 min read

React 19 New Features: useOptimistic, use(), Server Actions Explained (2026 Edition)

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.

  • React 19
  • Architecture
  • Next.js
  • Engineering
  • Performance
  • Hooks
•22 min read

Web Accessibility in 2026: Screen Readers, WCAG 2.2, and What Actually Works in Production

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.

  • Accessibility
  • WCAG
  • Frontend
  • Engineering
  • Performance
  • UX