Optimizing React Code with useCallback and useMemo
react•Jun 17, 2026

Optimizing React Code with useCallback and useMemo

In this article, we'll explore the proper use of useCallback and useMemo in React, and provide practical tips on how to optimize your code without over-relying on these hooks.

freecodecamp

freecodecamp

Original source

Key summary

Learn how to structure your React code to avoid overusing useCallback and useMemo, and improve performance without sacrificing debuggability.

TL;DR

  • Understand the purpose of useCallback and useMemo in React
  • Identify when to use these hooks for optimization
  • Learn how to move state down to components
  • Avoid overusing useCallback and useMemo
  • Measure performance before optimizing
  • Use React.memo for children
  • Stabilize references for React.memo

This content is automatically summarized using AI. For full context, always refer to the original article.

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