Improving React Application Performance: React.memo vs useMemo

There are some React APIs that we can reach for to improve performance and today, we’ll focus on two of the most misunderstood ones — React.memo and useMemo. Improving React application performance: React.memo vs useMemo

As a React developer, you’ve most likely come across situations where optimizing the performance of a component is necessary. There are certain cases where rendering a component might be so expensive that it uses up a lot of CPU resources and/or memory (i.e rendering a graph with thousands of data points).

When this happens, there are some React APIs that we can reach for to improve performance and today, we’ll focus on two of the most misunderstood ones — React.memo and useMemo.

Before we do this, however, it’s important to get a clear understanding of the concept of memoization and how it relates to these two APIs.

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