One night in September 2018 the food delivery service Deliveroo went haywire. It sent some customers the same food order several times, and other customers got nothing. In this video, Tom Scott explains that this was a classic example of the "Two Generals" problem, and how Deliveroo's "Night of the Multiple Orders" could have been mitigated -- by using something called an "idempotency token," which allows a transaction to only happen once.
You might know someone who can make a pipe out of any conceivable household object. But if they’re doing it every time they smoke, it might be time to get them a little Christmas present. And we’ve got just the thing: The Twisty™️ Glass Original Combo Pack, priced way, way down for December. If you’ve […]
With all the revolutionary tech that’s out there, it’s pretty sad that finding a simple stud in your wall can feel like dowsing for water. This can be equally true whether you’re using a magnetic finder and it’s reliance on “feel,” or an electronic unit that can give fuzzy readings (especially when the batteries are […]
Do you have any Star Wars fans on your list? Given the reach and output of its new corporate masters these days, it might be easier to ask if there’s anyone out there who isn’t a Star Wars fan. So let’s narrow it down further: Do you know a Star Wars fan who likes to […]