$ ./series/designing-a-flash-sale-seat-reservation-system-in-aws

Designing a Flash-Sale Seat Reservation System in AWS

20,700 exam seats, millions of people trying at the same time, and an older system that crashed and sold seats twice.

// 3 parts · ~51 min total · System Design

1. 01 The Architecture September 21, 2026 · ~18 min read →
2. 02 Never Sell a Seat Twice September 22, 2026 · ~14 min read →
3. 03 Holds, Payments, and the Slow Path September 24, 2026 · ~19 min read →

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