Using useEffect carelessly can cause performance issues or bugs. Here are some best practices:

• Specify dependencies carefully
  Always include every variable used inside the effect in the dependency array. If not, you could have stale or unexpected behavior.

• Avoid unnecessary effects
  Not every piece of logic needs an effect. For example, simple calculations based on props or state can usually be done inside the render.

• Cleanup side effects properly
  If your effect sets up subscriptions, event listeners, or timers, always return a cleanup function to avoid memory leaks.

• Split multiple concerns into multiple useEffect hooks
  Instead of stuffing everything into one useEffect, use several smaller ones for better organization.

• Use throttling/debouncing where needed
  For expensive operations (like API calls on input change), throttle or debounce the updates to improve performance.

• Memoize callbacks if passed inside effects
  If you're passing a function as a dependency, wrap it with useCallback to prevent unnecessary re-runs.

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