{"id":"hotel-reservation-optimistic-locking","text":"Hotel reservation uses optimistic concurrency control with per-date version counters; version mismatch between read and write raises `ConcurrencyError`.","truth_value":"IN","source":"entries/2026/06/05/topic-consistency-models.md","source_url":"","source_hash":"","justifications":[],"dependents":["conflict-detection-varies-by-consistency-model","hotel-occ-prevents-overbooking"],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"hotel-reservation-optimistic-locking","truth_value":"IN","reason":"premise"}]}}