Atharأثر
Quiet objects.
Orders with substance.A considered storefront with server-calculated totals, persistent orders, inventory reservations and cancellation that returns stock.
The brief
A convincing store must preserve price authority and stock integrity when customers repeat requests or availability changes.
The approach
The browser keeps the cart; the server determines the price. Orders and inventory changes commit together. A repeated request returns the existing order, while a changed cart cannot reuse its key.
Try it yourself
- Add products and adjust quantities in the persistent cart.
- Review authoritative totals and the delivery estimate.
- Place an order and observe the reserved inventory.
- Cancel the order and verify the stock returns once.
- Inspect tests for duplicate submissions, price tampering and insufficient stock.
Implementation & handoff
A live collection, cart, quote API, order history and cancellation flow. SQL constraints stop negative inventory; tests verify rollback, repeated submissions and stock release.
Taking it live
Pricing, stock and order integrity are done. For a client store we add checkout — card payment or cash on delivery — carrier integration and order notifications.