useMemo

Every time a React component re-renders, it redoes all its work, including rebuilding scales and re-preparing data.

useMemo caches that work so it only happens when the inputs actually change. Let's use it to keep charts snappy.

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4 minutes read

This is the first and cheapest rung of the performance ladder.

It costs you a single hook and a dependency array, and it often removes most of the lag in an interactive chart. Always start here.

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Dataviz = performance issues

Throttling & debouncing