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Notes on React, frontend engineering, and building for the web.

• June 30, 2023 · 2 min readWhen to Use memo in ReactReact.memo looks like a free performance win, but used carelessly it adds overhead without preventing a single re-render. Here's how to tell when it actually helps.
• June 30, 2023 · dev.toWhen to use memo in ReactWhen state changes, a component re-renders along with all of its descendant components. Here's when React.memo actually helps.