SIX mind-blowing React Native optimization hacks

react native is a great tool for creating applications but how to ensure their performance so today our experts at jelvix have created six easy tips for improving your react native app have a seat we're just getting started we're jelvics software development partner for industry leaders you're on our Channel weekly videos on Tech in five minutes don't forget to subscribe not to miss new videos first let's talk about why performance optimization is important a slow app can lead to poor user experience frustration and ultimately a lower retention rate it can also impact your app's ratings and reviews in the App Store so it's crucial to ensure your app is performing at its best moreover according to a study by Aberdeen group a one second delay in load time equals 11 fewer page views a 16 decrease in customer satisfaction and seven percent loss in conversions we hope we've scared you enough so let's start fixing performance the first tip we have for you is to reduce the number of renders in react native every time the state or props of a component change it triggers a re-render this can be costly if you have a lot of components or if your component tree is deep so to optimize performance try to reduce the number of renders by using should component update or react.memo to prevent unnecessary re-renders the second tip is to use flat list instead of scroll view for long lists flat list is a high performance list component that renders items incrementally as you scroll which means it's more efficient than scroll view for large data sets take a look at the screen now let's raise the degree third tip explore code partitioning and lazy loading these techniques will especially help bulky applications that use a lot of memory in fact we at jelvis try to split every code because this can greatly affect the initial load time and the user's first opinion in a nutshell code splitting is breaking up a large JavaScript code base into smaller bundles task managers like Gulp or grunt can help with this you can also import libraries like webpack or require.js lazy loading in turn is a method that allows you to load code components when the user directly interacts with them this is especially cool to do with photos which according to the website HTTP archive on average take up 45 of the total memory another way to optimize performance is to use native components wherever possible native components are written in native code and are optimized for performance react native provides many built-in native components such as image text input and scroll view that you can use instead of creating your own custom components next you can also optimize your app's images for better performance use optimized images that are compressed and properly sized for your app you can also use tools like react native fast image to Lazy load images and improve the loading time of your app another tip is to minimize the use of third-party libraries while third-party libraries can save you time and effort they can also slow down your app if they're not optimized for performance so only use the libraries that you really need and make sure they're well maintained and up-to-date finally you can also improve your app's performance by optimizing the JavaScript code use tools like the react native debugger or the Chrome developer tools to profile your app and identify performance bottlenecks you can also use tools like Hermes or Metro to optimize your JavaScript code and reduce the bundle size of your app we hope your next react native project will exceed your expectations and be the most productive you've ever created good luck with your development now for fans of self-study we recommend our other video comparing react native and flutter you'll find even more useful things there also support us by liking this video and leaving a comment and don't forget to subscribe and press the Bell button bye for now

Channel: Jelvix | TECH IN 5 MINUTES

Views: 5,267

Keywords: javascript, react native, react native performance, improve react native performance, react native app, react native app performance optimization, react native app project, react performance, react native app speed, react native app speed code, react native project, react native tutorial, javascript mastery, master javascript, react, react js, mobile app development, mobile development, react native development, tech with tim, app, react lazy loading, app development, reactjs

Id: KNmrainox2M

Length: 4min 45sec (285 seconds)

Published: Thu May 04 2023