How to Optimize the Performance of React-Redux Applications?

Optimizing the performance of React-Redux applications involves several strategies to improve loading speed, reduce unnecessary re-renders, and enhance user experience. In this article, we implement some optimization techniques, that can significantly improve the performance of applications.

We will discuss the different approaches to optimize the performance of React-Redux applications:

Steps to Create a React App and Installing Module

Step 1: Create a React application using the following command.

npx create-react-app redux-app

Step 2: After creating your project folder i.e. redux-app, move to it using the following command.

cd redux-app

Step 3: Install required dependencies like redux, and reselect.

npm i react react-dom redux react-redux reselect

Project Structure:

👁 project-structure

The Updated dependencies in your package.json file is:

 "dependencies": {
 "react": "^18.3.1",
 "react-dom": "^18.3.1",
 "react-redux": "^9.1.2",
 "redux": "^5.0.1",
 "reselect": "^5.1.0"
 }

Use useSelector Wisely

The useSelector hook can cause unnecessary re-renders if not used properly. Make sure you are selecting only the necessary part of the state.

Example: Below is an example to optimize the performance of React-Redux applications using Reselect Library.

Output :

👁 useSelector-Wisely-output

Normalize State

Ensure your Redux state shape is normalized. This reduces the complexity of your state and helps in efficiently updating and accessing it.

Example: Below is an example to optimize the performance of React-Redux applications using Reselect Library.

Output:

👁 Normalize-State-output

Split Reducers

Break down your reducers to handle smaller slices of state. This can make state management more efficient and avoid re-rendering.

Example: Below is an example to optimize the performance of React-Redux applications using Reselect Library.

Output:

👁 Split-Reducers-ou-tput

Using Reselect Library

The reselect library in React-Redux creates memoized selectors to efficiently compute state data, ensuring components re-render only when relevant state changes.

Example: Below is an example to optimize the performance of React-Redux applications using Reselect Library.

Output:

👁 Reselect-Library-output-(2)