https://vubon.me/tags/payments/Recent content in Payments on Vubon NotesHugoen-usWed, 03 Jun 2026 00:00:00 +0000https://vubon.me/posts/saga-pattern/Wed, 03 Jun 2026 00:00:00 +0000https://vubon.me/posts/saga-pattern/<p>Whenever microservices enter a system design discussion, one question always comes to my mind:</p> <p><strong>What happens when a transaction succeeds in one service but fails in another?</strong></p> <p>Let&rsquo;s take a payment system as an example.</p> <p>Imagine a user initiates a $100 transfer. The workflow looks like this:</p> <ul> <li>Transfer Service creates the transaction ✅</li> <li>Wallet Service deducts $100 from the user&rsquo;s balance ✅</li> <li>Bank Service sends the transfer request ❌</li> </ul> <p>Now we have a problem.</p>