// TOPIC
#concurrency
2 articles
◆◆◆AdvancedAmazonBooking
01Design Ticketmaster (seat booking / reservations)
Sell limited inventory to a stampede of buyers without double-booking a seat. Reservation holds, a conditional-update concurrency guard, and the read-vs-write consistency split.
#interview#concurrency#inventory
21 min◆◆◆AdvancedAmazonAlibaba
02Design a Flash Sale / Seckill System
Sell limited stock to a massive, spiky crowd without overselling. Atomic inventory decrement, request shedding, queues, and graceful degradation.
#interview#concurrency#inventory
22 min