https://www.notjust.dev/blog/2022-10-28-react-native-performance-optimisation
For measuring the performance score, I will use React Native Performance Score Monitor Flipper plugin. After testing the app for a few times, the final average result was around 30, which is pretty horrible to say the least. But we like challenges, so let's see whether we can improve it at least a little bit! React.memo

https://www.youtube.com/watch?v=DXhcbMvNX04
In this video, we'll show you how to improve the performance of your application by employing three distinct techniques: useMemo, useCallback, and memo. ... useMemo, useCallback, and memo. By t

https://www.digitalocean.com/community/tutorials/how-to-avoid-performance-pitfalls-in-react-with-memo-usememo-and-usecallback
You now have the tools to improve performance on expensive components. You can use memo, useMemo, and useCallback to avoid costly component re-renders. But all these strategies include a performance cost of their own. memo will take extra work to compare properties, and the Hooks will need to run extra comparisons on each render. Only use these

https://www.freecodecamp.org/news/better-react-performance-usecallback-vs-usememo/
Now that you know how React.memo works, let's start. How the useCallback Hook Works. useCallback is one of the built-in hooks we can use to optimise our code. But as you'll see it's not really a hook for direct performance reasons. In short, useCallback will allow you to save the function definition between component renders.

https://dev.to/vladimirvovk/how-to-use-reactmemo-and-reactusecallback-for-the-app-performance-optimization-9lj
React.memo To decide whether React should update the DOM it will render a component (using Virtual DOM), compare the result with the previous render and if the render results are different then React will update the DOM. By wrapping a component with memo React will render it the first time and memoize the result. And for the next render, if

https://blog.logrocket.com/optimize-react-native-performance/
The React.memo Higher Order Component (HOC). React.memo was introduced to functional components to serve the same purpose that React PureComponents serve in class components.memo prevents unnecessary re-rendering of a component and can help to optimize an application.. However, like other optimization technique, memo should only be used when it is necessary.

https://blog.logrocket.com/react-usememo-vs-usecallback/
useCallback pros useCallback cons; Helps developers cache a function to avoid excessive re-renders of a child component: Adds excessive syntax for callback definition, so use of useCallback may complicate your code: Developers can improve the use of memo built-in's performance enhancements (See the previous example): Cannot be used to efficiently and properly cache a value as useMemo

https://medium.com/@tejalmohod/mastering-performance-optimization-with-reacts-usememo-hook-42f29bd03817
In React, useMemo is a hook that memoizes the result of a function and re-computes it only when one of the dependencies has changed. It takes two arguments: the first argument is a function that

https://nishanthan-k.medium.com/leveraging-usecallback-and-usememo-for-performance-optimization-in-react-1716d7d14ad2
In React functional components, optimizing performance is crucial for enhancing user experience and efficiency. By leveraging the useCallback and useMemo hooks, developers can efficiently memoize functions and calculations, reducing unnecessary re-renders and improving overall performance.

https://dev.to/maitrish/mastering-react-performance-in-depth-guide-to-usecallback-and-usememo-5114
In this scenario, the combination of useCallback for the click handler and useMemo for the computation result ensures optimal performance for each item in the list.. In Conclusion: As React professionals, understanding the depth of useCallback and useMemo empowers us to craft high-performance applications. These optimizations, when applied judiciously, elevate your React code to new levels of

https://www.headway.io/blog/react-optimize-components-memo-usememo-usecallback
Learn how to optimize components in React.memo, useMemo, and useCallback. Occasionally you can run into scenarios where your components are rendering more often than they need to and slowing your site down. In most cases, React performance is not something you need to worry about. The core library does a ton of work under the hood to make sure

https://blog.devgenius.io/how-to-use-react-react-memo-usememo-usecallback-correctly-b6dfa2d29e44
Simply, React.memo is related to 'component', useMemo is related to 'value', useCallback is related to function. To be precise, useMemo return a value, useCallback return a function. Well, I'm gonna explain in order. React.memo React.memo allows us to memorize a component cache, and reuse it. The first rendering information is stored

https://dev.to/vignesh_pugaz/difference-between-usecallback-usememo-and-react-memo-18i6
A component is re-rendered if and only if either of the props passed or it's local state is changed. And when a component is re-rendered, it's child components are re-rendered. React.memo. React.memo was introduced in functional components in react v16.6. React.memo is a convenient way to avoid re-rendering in functional components.

https://ideaware.co/blog/react-native-optimization/
We will cover the following optimization tools provided by React: React.memo; useMemo; useCallback; useContext; React.memo. React.memo is a HoC(Higher order component) that implements the concept of Pure function. ... Premature optimization can be detrimental. Yet, for React Native, where performance disparities across devices can be

https://stackoverflow.com/questions/65020098/when-to-use-usememo-and-usecallback-for-performance-optimization
4. In that example, different answers for that use of useMemo and that use of useCallback: The useMemo is almost certainly overkill; it's just not that expensive for sayHello to build that string (vs. creating a new function to pass to useMemo on every render). The answer for useCallback depends on how sayHello is used.

https://www.youtube.com/watch?v=3cYtqrNUiVw
In this video we first discuss the concept of memoization. Then we learn about how to optimize the renders of your React Components by learning about these t

https://blog.devgenius.io/performance-optimization-with-react-hooks-usecallback-usememo-f2e527651b79
This article is the 3rd part of the "introduction to React Hooks" series. Up to now, I discuss about the Basic Hooks and the useReducer Hook in Additional Hooks.. part 1: Introduction to React Hooks — Basic Hooks part 2: Introduction to React Hooks — useReducer In this article, I am going to discuss useCallback & useMemo Hooks and how to use them to optimize the perform of the web

https://react.dev/reference/react/useMemo
Otherwise, React will re-run your calculation and return the new value. In other words, useMemo caches a calculation result between re-renders until its dependencies change. Let's walk through an example to see when this is useful. By default, React will re-run the entire body of your component every time that it re-renders.

https://stackoverflow.com/questions/54963248/whats-the-difference-between-usecallback-and-usememo-in-practice
In both useMemo and useCallback, the hook accepts a function and an array of dependencies. The key different is: useMemo will memory the returned value, it caches a value type. Usecase: Using it for caching calculation value heavily. useCallback will memory the function, it caches a function.

https://codebushi.com/react-performance-optimizations
React.memo will compare the previous props to the next props, and if different, will re-render the component. 6:52 - JavaScript Primitives (string, number, boolean) being passed as a prop will work fine with React.memo. 7:30 - Arrays, Objects, and Functions being passed as a prop will not work with React.memo alone.

https://medium.com/geekculture/memoization-in-react-native-ca894819ccff
React.memo():-React.memo is a higher-order component that optimizes functional components performance. Its functionality is similar to React.PureComponent, but this one is for functional components.

https://medium.com/swlh/optimise-your-react-app-performance-by-using-the-usememo-and-usecallback-hooks-wisely-247011181063
React.memo. React.memo is a Higher Order Component. You can wrap your component with React.memo(<Component />) for a performance boost by memoising the result of the component. Here is a simple

https://react.dev/reference/react/memo
A React component should always have pure rendering logic. This means that it must return the same output if its props, state, and context haven't changed. By using memo, you are telling React that your component complies with this requirement, so React doesn't need to re-render as long as its props haven't changed.Even with memo, your component will re-render if its own state changes or