Why most memoization is downright useless...

TK Dodo is a platform dedicated to sharing insights and resources on software development, technology trends, and career growth. Through articles, interviews, and community engagement, TK Dodo empowers developers to navigate their career paths, stay updated with industry advancements, and cultivate  skills for personal and professional development.

TkDodo

Many useCallback and useMemo implementations are pointless because they don't provide actual performance benefits. Memoization only helps when passing props to memoized components or preventing effects from firing unnecessarily. Common anti-patterns include memoizing functions passed to regular components and using non-primitive props as dependencies. The latest ref pattern and upcoming useEffectEvent can solve these issues without requiring extensive memoization chains.

The Useless useCallback

you missed the point of useMemo. Its not to improve performance, its to stop repeating expensive compute on same dataset between UI renders.

It is useless if you are React as view layer without any business-logic or any kind of data management.

Wow react devs starts being suspicious that react’s performance and its optimizations a piece of shit