{
  "id": 14054085,
  "title": "useMemo, React.memo, useRef, and Custom Hooks — Real-World React Guide",
  "url": "https://urgent.news/2026/10/12/usememo-react-memo-useref-and-custom-hooks-real-world-react-guide",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-10-12T22:07:55.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/rakeshdaniel321/usememo-reactmemo-useref-and-custom-hooks-real-world-react-guide-36bi"
  },
  "original_language": "en",
  "account": "useMemo, React.memo, useRef, and custom hooks are powerful tools in React that can optimize app performance. useMemo caches expensive calculations, React.memo avoids unnecessary re-renders, useRef stores mutable values without causing re-renders, and custom hooks enable reusing stateful logic across components. When used correctly, these features can make React apps cleaner and faster.",
  "summary": "useMemo caches an expensive calculation, React.memo skips unnecessary component re-renders, useRef stores values without causing re-renders, and custom hooks let you reuse stateful logic across components. Together, they make React apps cleaner and faster when used correctly. Quick Difference Tool Main Job Causes Re-render? useMemo Cache a calculated value No React.memo Skip re-render if props do…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}