Tills stop selling when the line drops

Incident drill · Intermediate

What is happening

Alert: 0 sales from 40 stores for 3 minutes during an ISP outage.

The tills call the cloud API for every sale, so when the line drops nobody can pay.

Let stores keep selling offline and sync later, without losing or double-counting anything.

You have 6 changes and 10 minutes. A change is adding or removing a part or a connection, or changing a part’s settings. Fewer changes and less time score higher.