Chapter 32: High-Concurrency Financial & Transactional Systems

Part IX: High-Scale System Design Case Studies & Applied Infrastructure

Financial systems require durable decisions at high concurrency. This chapter covers inventory holds, payment orchestration, double-entry wallet ledgers, and deterministic exchange matching with explicit safety boundaries.

32.1 System Design: Distributed Hotel Reservation & Booking System (Inventory Locking, Overbooking Prevention, Two-Phase Holds)
32.2 System Design: High-Scale Payment Processing System (Payment Gateway Integration, Idempotent Processing, Ledger Reconciliation)
32.3 System Design: Digital Wallet Architecture (Double-Entry Ledger Engine, Multi-Currency Balance Tracking, Zero-Loss Durability)
32.4 System Design: Ultra-Low Latency Stock Exchange Engine (Order Book Matching, Deterministic Sequencing, Multicast Broadcast)
Chapter 32 References