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React Interview Guide
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The performance optimizations have a massive impact on the customer experience. Even though React applications have a very fast UI by default, there might be performance issues when the size of the application increases. This section will focus on the questions related to performance optimization Hooks, which you could expect to be asked by interviewers to gauge your skill from a broader perspective.
Memoization is an optimization technique for speeding up web applications by caching the results of expensive function calls. It returns the cached result when the same input arguments have been passed again.
In React, this optimization can be implemented through two Hooks: useMemo
and useCallback
. These Hooks improve the performance, skipping the unnecessary re-rendering by returning the cached result when the same input is given.
The useMemo...