Don't Execute Withdrawals Instantly: Use a Queue

If you have a fintech app with wallet withdrawals, try never to execute them immediately.

The right way is to store the transaction first in a queue table and let it pass through clear stages.

Execution must go through a queue tool like Redis to ensure sequence and prevent conflicts or double execution.

The idea is not to treat the transaction as a function that runs and finishes, but as an Event with a full lifecycle. This way, you control every detail and handle errors gracefully without affecting UX.

Benefits

• If the system has an issue, the user sees "Processing" instead of an error.
• If the bank account lacks funds at that moment, the transaction isn't lost; it waits in the queue.
• It gives you a chance to review transactions before execution if you detect suspicious activity.

This simple design approach drastically improves stability. In short: don't execute immediately. Let it journey through the queue first. You will realize the value when facing real production issues.