System Design: Payment Gateway

System design for a payment gateway service (WITH idempotent auth-capture workflow!) by a FAANG Senior Engineer that has reviewed over 100 design documents 📚

Other names for this common system design interview question:
Payment Service
Payment System
Distributed Ledger
Digital Wallet

Examples of real world implementations of this:
Stripe
Paypal

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Here's a link to our discord channel where I organize the live discussions every weekend:
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Originally recorded 11/26/2022

#systemdesign #programming #technology