What is React.memo and when should you use it?

React.memo is a higher-order component that prevents unnecessary re-renders by memoizing component output when props remain unchanged.

Spread the knowledge with other engineering candidates.

Help us rank high-quality interview preparation materials.

Get instant feedbacks, dynamic voice simulations, and keyword scorecard matchers.

Jeevan Bhargav

Audited by Creator

This answer is calibrated for technical interviews. Verify benchmarks in local sandboxes before deploying.