Inventory Reservation System

Purchase flow

1. Customer clicks Buy

The service checks whether the requested quantity is available.

2. Stock is reserved

If available, an order becomes RESERVED. Its units are held for 2 minutes by default while the customer pays.

3. Reservation ends

Payment succeeds →CONFIRMED
Reserved stock moves to sold.
Cancel / payment fails →CANCELLED / PAYMENT_FAILED
Reserved stock returns to available.
Unpaid at the deadline →EXPIRED
The expiry worker returns stock to available.

Backend activity

No recording
available=5 reserved=0 sold=0
Preset stock

Run a scenario to record backend activity.

0 entries 0 successful · 0 rejected