React Performance Optimizations

This project demonstrates several techniques to improve performance in React applications. Each optimization is shown in a separate component, and all the examples are combined in the App.tsx file.

You can also read the full explanation of these techniques in my Medium article:
React Performance Optimizations - Medium

Components Included

• ReactMemoExample.tsx: Demonstrates how to use React.memo to prevent unnecessary re-renders.
• UseMemoExample.tsx: Shows how useMemo helps with expensive calculations by memoizing values.
• UseCallbackExample.tsx: Uses useCallback to memoize functions, reducing re-renders.
• ReactLazyExample.tsx: Demonstrates lazy loading components with React.lazy and Suspense.
• AvoidInlineFunctionExample.tsx: Shows how to avoid inline functions for better performance.
• ImmutableDataExample.tsx: Uses immutable data structures to ensure better performance and predictability.
• UseFunctionInSetStateExample.tsx: Demonstrates how to use a function in setState for proper state updates.
• KeyCoordinationListRenderingExample.tsx: Explains how to use unique keys when rendering lists.
• PureComponentExample.tsx: Demonstrates how PureComponent prevents unnecessary re-renders by doing a shallow comparison of props and state.
• LazyLoadingImagesExample.tsx: Shows how to use lazy loading for images to improve load time.

How to Run the Project

1. Clone this repository:

   git clone https://github.com/your-username/react-performance-optimizations.git

2. Navigate to the project folder:

   cd react-performance-optimizations

3. Install the dependencies:

   npm install

4. Run the development server:

   npm run dev

Project Structure

/src
  /components
    - ReactMemoExample.tsx
    - UseMemoExample.tsx
    - UseCallbackExample.tsx
    - ReactLazyExample.tsx
    - AvoidInlineFunctionExample.tsx
    - ImmutableDataExample.tsx
    - UseFunctionInSetStateExample.tsx
    - KeyCoordinationListRenderingExample.tsx
    - PureComponentExample.tsx
    - LazyLoadingImagesExample.tsx
  - App.tsx
  - main.tsx

Conclusion

These examples show different ways to optimize your React apps for better performance. Each technique can help your app run faster, especially as it grows larger. Feel free to explore and use them in your own projects!