Build fast, memory‑efficient React virtualized lists with tuning tips for overscan, variable heights, a11y, and profiling—plus practical code examples.
Learn Next.js image optimization with next/image: responsive sizes, AVIF/WebP, blur placeholders, CDN loaders, caching, and production checklist.
Apollo vs Relay: strengths, trade‑offs, and when to choose each for React GraphQL apps, from caching and pagination to SSR, typing, and developer UX.
A practical guide to React dynamic imports and lazy routes with React Router, preloading strategies, SSR notes, and performance pitfalls.
Hands-on Framer Motion tutorial for React: setup, key APIs, gestures, layout, AnimatePresence, scroll, SVG, performance, TypeScript, testing.
A practical guide to unit testing React with Testing Library—setup, queries, user events, async, MSW, providers, and best practices.
