Optimizing React Applications: Performance Tips

React applications often perform well out of the box, but as your application grows in complexity, optimizing performance becomes critical. Two powerful techniques for optimization are memoization and code splitting. Let’s explore these techniques along with other best practices to ensure a smooth user experience.

1. Memoization in React

Memoization involves caching the results of expensive computations or components so that they can be reused without recalculating or re-rendering unnecessarily. It helps reduce computational overhead and improves the performance of React apps.

Why Use Memoization?

• Prevents unnecessary re-renders.
• Optimizes expensive calculations.
• Saves resources, especially in components with heavy computations or rendering logic.

React.memo

React.memo is a higher-order component (HOC) that prevents functional components from re-rendering unless their props change.

Example:

import React from "react";

const Child = React.memo(({ name }) => {
  console.log("Child rendered");
  return <h1>Hello, {name}</h1>;
});
function Parent() {
  const [count, setCount] = React.useState(0);
  return…