Building Payment Systems at Scale
Watch Recording
About This Talk
Architecting payment systems for millions of daily transactions. Covers distributed systems, failure handling, and regulatory compliance from SabPaisa experience.
Key Takeaways
- Idempotency is non-negotiable in payment systems
- Design for failure at every layer
- Regulatory compliance varies dramatically by geography
- Real-time reconciliation prevents fraud and errors
- User trust is built through transparency and reliability
Resources
Transcript
Full Transcript
[00:00] Thank you for that introduction. It’s wonderful to be here at FinTech Summit 2024.
[00:15] Today I want to share some hard-won lessons from building payment infrastructure that processes millions of transactions daily.
[02:30] Let’s start with the fundamental truth of payment systems: idempotency isn’t optional, it’s existential.
[05:45] When we first launched at SabPaisa, we underestimated how often network failures would cause duplicate requests…
[15:20] The second principle I want to discuss is designing for failure. Not if systems fail, but when.
[28:00] Regulatory compliance is where things get interesting. What works in India doesn’t work in the US, and vice versa.
[40:00] Let me leave you with this: the best payment system is one your users never think about. It just works.
[44:30] Thank you. I’m happy to take questions.