Design Room-Level Hotel Reservations Without Double Booking
Company: Lead Bank
Role: Software Engineer
Category: System Design
Difficulty: medium
Interview Round: Onsite
Overview: Explore a room-level hotel reservation design where searches may be stale but overlapping stays can never both be confirmed. The discussion covers half-open date ranges, expiring holds, atomic booking, idempotent retries, payment failures, and reconciliation.
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