Onceit.
A timed sale concentrates a month of traffic into an hour.
- Client
- Onceit
- Sector
- E-commerce
- Scope
- App + web + admin
- Stack
- Next.js, Node.js, PostgreSQL
A commerce build across app, web and admin for time-limited sales, covering inventory holds, checkout and fulfilment.
What made it hard.
A drop or sale concentrates a month of load into twenty minutes. Caching strategy is the product.
Inventory truth
Overselling is a support problem that scales faster than revenue does.
Checkout friction
Every additional field costs conversion, and payment coverage has to be broad and fast.
Post-purchase
Returns, refunds and exceptions are most of the operational cost and none of the demo.
What we shipped.
A commerce build across app, web and admin for time-limited sales, covering inventory holds, checkout and fulfilment.
How it holds up.
Load tested well above expected peak, with inventory as a single source of truth and checkout given the most engineering attention because it converts.
The systemInventory holds are atomic and short-lived, and the sale path is load-tested well above the expected peak.
Theirs, from day one.
Repositories, cloud accounts and documentation sat with the client throughout. Senior engineers wrote the production code rather than specifying it.
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