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Mastering React Rendering Performance with Memoization and Context

Tutorial May 03, 2025 

import React, { useState, useMemo } from 'react';

function ExpensiveComponent({ data }) {
  const processedData = useMemo(() => {
    // Expensive computation
    return data.map(item => /* processing */ item);
  }, [data]);

  return <div>{/* render processedData */}</div>;
}

This approach ensures that the expensive computation runs only when data changes, improving performance.

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