📋 Advanced List Rendering

Optimizing list rendering for performance and scalability.

Virtualization with Window Scroller

import { FixedSizeList } from "react-window";

function VirtualizedList({ items }) {
  const Row = ({ index, style }) => (
    <div style={style}>Item {items[index].name}</div>
  );

  return (
    <FixedSizeList
      height={600}
      itemCount={items.length}
      itemSize={35}
      width="100%"
    >
      {Row}
    </FixedSizeList>
  );
}

✅ Key Takeaways

• Use **virtualization** for large lists (1000+ items)

• Implement **windowing** to render only visible items

• Combine with **memoization** for best performance

• Profile with React DevTools Profiler