Design a Payment System System Design Interview

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Get a Free System Design Roadmap PDF with 145 pages by subscribing to our monthly newsletter: https://lucianoprea.com/roadmap • ✏️📘 Summary Notes: https://lucianoprea.com/blog/consiste... • 0:00 - Context • 0:45 - How a payment system works? • 3:05 - Scope the problem • 5:21 - Functional and Non-Functional Requirements • 6:05 - Payment System Components • 8:27 - Asynchronous Payments • 12:40 - Dealing with Payment Failures • 13:17 - Guarantee transaction completion • 14:59 - Dealing with Transient Failures • 17:54 - Timeout Pattern • 19:58 - Fallbacks • 20:55 - Dealing with Persistent Failures • 22:36 - Idempotency (Avoid double payments) • 25:14 - Making use of Distributed Systems • 26:56 - Encryption for Data-at-Rest and Data-in-Transit • 29:31 - Data Integrity Monitoring • 20:43 - Conclusions

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