What is React.memo and how does it work with hooks?

Updated May 6, 2026

Short answer

React.memo prevents unnecessary re-renders of functional components.

Deep explanation

It performs shallow comparison of props and skips render if unchanged.

Real-world example

Optimizing large UI trees with stable props.

Common mistakes

Expecting deep comparison by default.

Follow-up questions

Can hooks bypass React.memo?
When not to use React.memo?

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