Enterprise Inventory Integrity: Zero Overselling Architecture
Webito's stock engine is engineered around the operational rigor of tier-one enterprise retailers, preventing overselling even under concurrent flash sale traffic spikes.
1. Real-Time Checkout Stock Reservations
Inventory in Webito is a dynamic state machine rather than a static integer:
- Instant Gateway Lock: When a buyer initiates the payment step, the exact quantities are reserved and locked for 15 minutes.
- Permanent Deduction on Verification: A cryptographically verified gateway success callback immediately executes a permanent stock deduction.
- Automated TTL Release: If the buyer abandons checkout or the timer expires, reserved units release back to sellable stock without staff intervention.
The Effective Sellable Stock Formula
The engine enforces: Effective Sellable Stock = Recorded Ledger Balance - Total Active Reservations. This mathematical constraint prevents overselling under heavy concurrency.
2. Append-Only Stock Movement Ledger
Every physical SKU adjustment adheres to accounting-grade auditability:
- Immutable Historical Records: Inventory logs are strictly append-only; entries cannot be altered, overwritten, or deleted.
- Clear Transaction Typology: Categorizes shifts across sales deductions, order returns, warehouse counts, damage reconciliations, and manual adjustments.
- Unlimited Digital Goods: Downloadable files and online courses operate with unlimited stock, bypassing reservation locks.