Using a mobile app should be an enjoyable experience, without any frustrating delays.
Peak app performance requires you to write clean and efficient code using the right tools and libraries.
Take a look at these tips and techniques to optimize the performance of your React Native app.
Reduce Unnecessary Re-Renders With useMemo Hook
React Native renders components using a Virtual DOM (VDOM) technology.
This process is expensive, so you should avoid unnecessary updates to the component’s state and props.
The React library provides theuseMemoanduseCallbackhooks to solve this problem in functional components.
TheuseMemohook can accept a second argument as a dependency.
This means the memoized function will only run gain when this dependency changes.
useCallbackis similar touseMemo, but it memoizes a callback function instead of a value.
It is important to ensure that all state you store is absolutely necessary for the component to render.
For example:
In this example, thehandleClickfunction uses thesetStatehook to update the state.
This approach allows Reacts virtual DOM to re-render the component when it recognizes that youve updated the state.
you might also use a state management library like Redux andthe built-in context APIto implement this technique.
Here is a list of several PMC tools available.
The JS engine then takes time to process and display the message.
Too many console statements in your code will slow down its execution and cause performance delays.
Additionally, it makes switching between multiple displays in your tool much easier, improving the user experience.
You should consider factors like the right navigation pattern (tab-based, stack-based, drawer-based, etc.)
to suit your app.
Caching is a useful method for developing a reliable navigation system.
React Native has several libraries available for navigation, such as React Navigation and React Native Navigation.
you’re free to use them to implement some of these common navigation patterns in your app.
Code splitting and lazy loading are techniques that can reduce your React Native apps size and improve performance.
This can significantly reduce the initial load time of the app.
This can help reduce the amount of memory your app uses and improve overall performance.
Why Performance Optimization Is Important
Performance optimization is crucial for the success of any mobile app.
A slow app can lead to poor user experience and ultimately result in low engagement and retention.
