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Original rewrites on React, Node.js, TypeScript and AI — practical notes from the same engineering practice behind our operator software. Article bodies are in English.
Tagged: useeffect
Stop defaulting to useEffect for every React problem
Effects sync with external systems; derive in render, handle clicks in events, fetch with real data tools.
1424 wordsRead articleWhat useEffect Fetching Costs You and What TanStack Query Changes
Why effect-based data fetching leads to duplicate requests, boilerplate and stale closures in React, and how TanStack Query's keys, staleTime and invalidation fix them.
1360 wordsRead articleCancelling Superseded Work in React: AbortController for Track Switching
Learn why skipped tracks and stale queries keep writing to your UI, how AbortController cancels the real request, and how it complements debounce and throttle in React.
1747 wordsRead articleDoes This Hook Earn Its Place? Ten Review Questions for React Code
Learn ten concrete review questions that catch redundant state, stale effects, render loops, needless memoization and oversized components in React Hook code.
1324 wordsRead articleAuditing useEffect: Ten Common Bugs, Their Symptoms and Real Fixes
Recognize the ten most common useEffect mistakes in React, from missing cleanup and stale closures to race conditions and prop syncing, and apply the right fix.
1919 wordsRead articleReact Fragments and StrictMode: Leaner Markup and Earlier Bug Detection
Learn how React Fragments group elements without extra DOM wrappers and how StrictMode's development-only double invocation exposes impure renders and effects.
976 wordsRead articleBuild a Toy useState to Understand Snapshots, Queues and Effects
Learn how React hooks behave by building a tiny useState, then use that model to explain update queues, stale snapshots, closures, effect cleanup, refs and batching.
3107 wordsRead articleRetiring the Latest-Value Ref: Effect Events with useEffectEvent
Learn how useEffectEvent in React 19.2 separates non-reactive logic from an effect, removes latest-value ref hacks, and when the hook is the wrong tool.
917 wordsRead articlePicking the Right React Tool: Derive, Handle, Fetch, Defer or Effect
A decision guide for replacing reflexive useEffect calls with derived values, event handlers, a data layer, useTransition, measured useMemo and React 19 APIs.
1896 wordsRead article
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