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Inventory, money and coordination
Overselling, double charging and split-brain: atomic claims, idempotency keys, fencing tokens and sagas.
Coordinate orders, stock and payment with idempotent steps and compensation.
Protect scarce inventory with a waiting room, admission tokens and recoverable reservations.
Coordinate leases and fencing tokens without pretending expired owners stop executing.
Generate unique IDs across workers while handling clock rollback and sequence exhaustion.
Reserve and settle long-lived resource quotas across concurrent services.
Reserve room-type inventory across every night of a stay with atomic holds and confirmation.
Serialize bids and deterministic closing under retries and delayed worker execution.
Turn released capacity into expiring waitlist offers without double allocation.
Coordinate atomic decisions across prepared participants with durable recovery and honest blocking semantics.
Recover long-running workflows with durable history, timers and idempotent activities.
Derive current access from independent grants, expirations and revocations with revision-aware checks.