How to avoid unnecessary re-renders of a card list component when an external application periodically updates the data in the storage, and memoizing individual cards is impossible?

To avoid unnecessary re-rendering of the card list component when updating data from an external application, you can:

• Use local state or memoization at the list level, not at individual cards.
• Apply memoized selectors (e.g., reselect in Redux) so that the list component receives only changed data.
• Use keys for cards so that React can efficiently determine which elements have changed.
• Move data comparison logic to shouldComponentUpdate (class components) or React.memo with custom comparison to prevent re-rendering if data hasn't changed.

If memoizing individual cards is not possible, then optimize the update at the list level by minimizing prop and state changes so that React does not trigger a re-render unnecessarily.