[bokwoon]

> I assume that the cascading done on GitHub would be done on a FK constraint

GitHub doesn’t use foreign keys, the cascade delete must have been manually implemented.

https://news.ycombinator.com/item?id=21486494

[ncmncm]

That it took a half hour to do all the pointless activity says something.

[ric2b]

They use Rails, right? It's probably a cascade delete but done on the application, Rails makes that very easy.