Case study · Point of sale
A cloud POS for restaurants and groceries that works offline
One system for restaurants, cafés and groceries: weighing, scale labels, expiry batches and offline sales, with ZATCA invoices.
Client: A Jusoor Tech product · System: سند POS
- 130/130
- tests on two databases
- 14/14
- concurrent-sale tests
- 3
- supported databases
The challenge
A till must keep selling when the internet drops, and must never sell the same item twice when two cashiers tap at once.
What we built
- Offline selling with sync on reconnect.
- Weighing, scale labels and expiry batches for groceries.
- Real concurrency tests on MySQL and PostgreSQL.
The result
Published for trial at jusoor-tech.com/sanad-pos, with every concurrency test passing.