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Tutorials, guides, and insights to help you become a better developer.
Learn how React.lazy, Suspense boundaries, and React 19 concurrent features (useTransition, useDeferredValue) eliminate bundle bloat and loading jank.
AdminJanuary 30, 20267 min read
Stop making users wait for server round-trips. Learn how to use React's useOptimistic hook and TanStack Query to update your UI instantly and roll back gracefully on failure.
AdminJanuary 29, 20265 min read
Two matrix search problems, two completely different optimal approaches. Learn when to use virtual 1D binary search vs the staircase elimination — the distinction that trips up most candidates.
AdminJanuary 26, 20266 min read
A rotated sorted array still has structure you can exploit. Learn the one insight that makes O(log n) search possible — and how to handle duplicates.
AdminJanuary 23, 20264 min read
Learn how to isolate React rendering failures with error boundaries so one bad component never takes down your entire page.
AdminJanuary 22, 20268 min read
Binary search isn't just for sorted arrays. Learn to search the range of possible answers to crack Koko Eating Bananas, Ship Packages, and a whole category of hard problems.
AdminJanuary 20, 20267 min read
useDebounce, useLocalStorage, useMediaQuery, and seven more custom hooks that solve the same problems in every React project — with production-ready TypeScript implementations.
AdminJanuary 16, 20267 min read
Two pointers, one pass, O(n) — learn how the variable-size sliding window grows and shrinks to solve substring and subarray problems efficiently.
AdminJanuary 15, 20264 min read
Custom hooks replaced render props for most cases — but not all. Learn the four scenarios where the old pattern still wins, with TypeScript examples.
AdminJanuary 13, 20266 min read