Ticket Booking Without Double-Booking
mediumOpen designVery commonly asked~45 minHLD roundBar raiserSDE-2 and upFlipkartRazorpayPhonePeAmazonSwiggyConsistency & ConsensusStorage & Data ModellingResilience
The question, as asked
“Design seat booking for something like BookMyShow or IRCTC. Two people tap the same seat at the same moment — what happens?”
Your answer, first
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Worked answer in progress
This one is listed because it comes up constantly — the three-depth answer, follow-ups and red flags are being written. Attempt it above anyway; that part works, and the guides below cover the ground the model answer will.