React useCallback vs useMemo — When You Actually Need Them
Junior PRs in my reviews often wrap every function in useCallback and every array in useMemo because...
Jul 8, 202610 min read6 reactions1 comments
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useMemo vs useCallback in React
React applications re-render whenever state or props change. In most cases, React handles...
Jun 15, 20262 min read5 reactions0 comments
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Apr 25, 2026React.memo, useMemo, useCallback: When They Help vs Hurt
Most React memoization is premature. This breaks down when memo, useMemo, and useCallback actually help and when they add memory overhead with no real gain.
Apr 25, 20267 min read1 reactions0 comments
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Mar 5, 2026Optimizing Re-renders in React Native: React.memo, useCallback, useMemo — When They Actually Help
React.memo, useCallback, and useMemo are the most misunderstood performance tools in React Native....
Mar 5, 20268 min read1 reactions0 comments
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Jan 29, 2026Why Your React App Re-renders Too Much: A Deep Dive into Performance Optimization
Your React app feels sluggish and you don't know why. Learn the exact patterns causing unnecessary re-renders, how to identify them with React DevTools, and battle-tested strategies that reduced our render count by 80%.
Jan 29, 20268 min read0 reactions0 comments
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Dec 27, 2025🧠 Otimização no React: O Que, Quando e Por Quê
React.memo (Memoriza um Componente) 💡 O que faz: Envolve um componente funcional. Se as props do...
Dec 27, 20251 min read0 reactions0 comments
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Dec 27, 2025🧠 O Foco do useMemo: Memorizar Valores
O useMemo é um Hook que atua dentro do seu componente. Seu objetivo é memorizar um valor específico—...
Dec 27, 20251 min read0 reactions0 comments
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Mar 30, 2025React 19 Memoization: Is useMemo & useCallback No Longer Necessary?
React 19 Brings Automatic Optimization For years, React developers have relied on...
Mar 30, 20253 min read32 reactions2 comments
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Dec 18, 2024Optimizing Performance with React's useMemo Hook: Memoizing Expensive Calculations
useMemo Hook in React The useMemo hook is a built-in React hook that helps optimize the...
Dec 18, 20244 min read5 reactions0 comments
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Dec 18, 2024Optimizing React Performance with useMemo for Caching Expensive Calculations
useMemo Hook for Caching in React The useMemo hook is used in React to optimize...
Dec 18, 20244 min read0 reactions0 comments
React hooks deep dive - useCallback, useMemo, and memo
React hooks deep dive - useCallback, useMemo, and memo In the ever-evolving world of...
Jul 30, 20243 min read0 reactions0 comments
Mastering React: A Deep Dive into Memoization and Component Optimization
Hello Everyone, السلام عليكم و رحمة الله و بركاته, As mentioned Before, we will go through each note...
May 22, 20243 min read102 reactions14 comments