The Function That Was Born Again — Understanding React’s useCallback Why I made my app slower…

📰 Medium · JavaScript

Learn how React's useCallback hook can impact app performance and why it's essential to use it judiciously

intermediate Published 6 Jun 2026
Action Steps
  1. Read the full article on Medium to understand the context of the issue
  2. Use the Chrome DevTools to profile and identify performance bottlenecks in your React app
  3. Apply the useCallback hook to memoize functions and prevent unnecessary re-renders
  4. Test and compare the performance of your app with and without useCallback
  5. Optimize your code by using useCallback only when necessary and avoiding unnecessary memoization
Who Needs to Know This

Frontend developers and engineers working with React can benefit from understanding how to optimize performance using useCallback

Key Insight

💡 Use useCallback judiciously to prevent unnecessary re-renders and optimize app performance

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Discover how React's useCallback hook can slow down your app if not used carefully

Full Article

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