John now takes orders online. Each order goes straight to the old receipt printer in the kitchen, and the site waits until it has printed. The printer manages six receipts a minute. At 8:00 on Saturday three hundred orders arrive at once — the site freezes, people press "Order" again, and half the orders vanish.
JOHN’S LIST
- ○Customers see "order accepted" straight away.
- ○No order is lost, even if the printer jams.
- ○The printer is never fed faster than it prints.