When working with React applications, you often need to notify users about the status of asynchronous operations such as API calls. Integrating Toastify with async actions helps provide clear feedback about loading states, successes, and errors. The most common pattern involves displaying a loading notification while an operation is in progress, then updating or replacing it with a success or error notification depending on the outcome.

To implement this, you typically trigger a loading toast before starting the async operation. This can be a non-dismissable toast with a message like "Saving..." or "Fetching data...". Once the operation completes, you can update or replace the toast based on whether it succeeded or failed. This approach keeps the user informed throughout the process and avoids notification clutter.

Updating or replacing toasts is essential for a smooth user experience. Instead of stacking multiple notifications, you can use a unique toast identifier to update the existing toast. When the async operation finishes, update the message and appearance of the toast to reflect the result, such as changing Loading... to Success! or Failed to save. This pattern reduces noise and ensures the notification remains relevant.

Here is a typical flow for async operation notifications:

• Show a loading toast when the operation starts;
• Update or replace the toast with a success message if the operation completes successfully;
• Update or replace the toast with an error message if the operation fails.

This method helps you deliver meaningful, timely feedback without overwhelming users with multiple notifications.