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Mastering React Rendering Performance with Memoization and Context

Tutorial May 03, 2025

The Context API allows for sharing state across components without prop drilling. However, improper use can lead to performance issues, as any change in context value triggers re-renders in all consuming components.([Medium][6], [GeeksforGeeks][2])

Best Practices:

React Performance Optimization Cheatsheet: Hooks, Memoization, and Lazy Loading

Cheatsheet August 20, 2024
javascript

This approach drastically reduces the number of rendered DOM nodes, improving performance when dealing with large datasets.

  • Avoid unnecessary re-renders: Use React.memo, useMemo, and useCallback to prevent components from re-rendering unnecessarily.
  • Use Lazy Loading: Defer loading of components and assets until they are actually needed to improve the initial load time.
  • Optimize Large Lists: Use windowing techniques to render only the visible portion of large lists, reducing the rendering workload.
  • Profile and Measure: Use React's built-in profiling tools to identify performance bottlenecks and optimize where needed.