System Design Global Payment Processing | Paypal

In this in-depth video, we explore the architecture of a global payment system designed to handle high transaction volumes for both merchants and consumers. We'll break down each component—from payment gateways to the service layer and data management, highlighting security, scalability, and low latency. This video is perfect for engineers, developers, and anyone preparing for system design interviews at top tech companies. 0:00 – Introduction: Overview of Global Payment System Design 1:25 – Clarifying Requirements: Scope, users, transactions, and compliance 2:16 – System Goals: High availability, scalability, security, and low latency 2:46 – High-Level Architecture: Client Layer, Service Layer, and Data Layer 3:48 – Client Layer: User interactions and API consumers 4:25 – Service Layer Overview: Core services, microservices, and business logic 4:45 – Payment Gateway vs Payment Processor: Roles and interactions 7:14 – Data Layer: Database choices and structure for scalability 7:51 – Database Per Service: User, Account, Payment, Transaction, Fraud Detection 12:13 – Detailed Component Interaction: Flow from authentication to payment processing 18:55 – Resilient Microservice Patterns: Circuit Breaker, Retry, Idempotency, and Saga 20:26 – Security Measures: Encryption, access control, and fraud detection 21:11 – Scalability and Performance Optimization: Load balancing, caching, and sharding https://www.linkedin.com/in/bytemonk/ https://www.youtube.com/playlist?list=PLJq-63ZRPdBt423WbyAD1YZO0Ljo1pzvY https://www.youtube.com/playlist?list=PLJq-63ZRPdBssWTtcUlbngD_O5HaxXu6k https://www.youtube.com/playlist?list=PLJq-63ZRPdBu38EjXRXzyPat3sYMHbIWU https://www.youtube.com/playlist?list=PLJq-63ZRPdBuo5zjv9bPNLIks4tfd0Pui https://www.youtube.com/playlist?list=PLJq-63ZRPdBsPWE24vdpmgeRFMRQyjvvj https://www.youtube.com/playlist?list=PLJq-63ZRPdBslxJd-ZT12BNBDqGZgFo58 AWS Certification: AWS Certified Cloud Practioner: https://youtu.be/wF1pldkQrOY AWS Certified Solution Architect Associate: https://youtu.be/GzomXNLFgkk AWS Certified Solution Architect Professional: https://youtu.be/KFZrBxSA9tI #systemdesign #payments #paypal