Agentic data science with the Data Agent Kit
cloud.google.com·6h ago
System Design
ByteByteGo·Sep 8·5 min read
Built for Reliability: How American Express Processes Payments at Scale
TL;DR
American Express utilizes a robust microservices architecture to ensure rapid payment processing, achieving near-instant transaction approvals. This system is designed to handle failures gracefully without impacting customer experience.
✦ Why It Matters
Evaluate your payment processing architecture to ensure it can handle failures without affecting user experience.
Key Takeaways
- Implement a cell-based architecture for independent transaction processing.
- Use a Global Transaction Router to manage inter-cell communication.
- Ensure cells can operate independently to minimize failure impact.
- Reroute transactions to healthy cells during service disruptions.
How It Works
In a cell-based architecture, each cell is a complete, self-sufficient unit that processes transactions independently. The Global Transaction Router directs traffic to the appropriate cell based on deterministic or priority-based routing, ensuring that transactions are handled efficiently.
If a service fails, the router reroutes the transaction to a healthy cell, discarding any partial work to maintain system integrity.