React Memory Management Best Practices

Memory management is crucial for React application performance.

Common Issues

• Memory leaks in closures
• Large object retention
• Event listener cleanup
• State accumulation

Solutions

Cleanup Effects

useEffect(() => {
  const handler = () => console.log('cleanup');
  
  window.addEventListener('resize', handler);
  
  return () => {
    window.removeEventListener('resize', handler);
  };
}, []);

Memoization

Use React.memo and useMemo appropriately.

State Management

Avoid storing large objects in state.

Good memory management prevents leaks.