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How does code splitting improve performance in large React apps?
Asked on Nov 14, 2025
Answer
Code splitting in React applications enhances performance by breaking down the app into smaller, manageable chunks that are loaded on demand. This reduces the initial load time by only delivering the code necessary for the current view, improving user experience and resource efficiency.
Example Concept: Code splitting is a technique used in React to divide the application into separate bundles that can be loaded asynchronously. By leveraging tools like Webpack or React.lazy, developers can ensure that only the essential parts of the application are loaded initially, while other parts are fetched as needed. This approach minimizes the initial payload, speeds up the loading time, and can significantly enhance the performance of large applications by preventing the browser from being overwhelmed with unnecessary code.
Additional Comment:
- React.lazy and Suspense are commonly used for implementing code splitting in React apps.
- Webpack's dynamic imports allow splitting code at logical points in the application.
- Code splitting can also improve caching efficiency by allowing unchanged code to be cached separately.
- It's crucial to identify which parts of the app can be split without affecting user experience.
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