[thih9]

> Then in the 2010s, it was MongoDB because non-durable writes made it “webscale“.

Off topic, it was marketing all along: https://news.ycombinator.com/item?id=15124306

[Hilift]

It was designed by former DoubleClick engineers as an afterthought DIY db for another service because no other db met their requirements. Supposedly version 4.2.8 (2020) is fairly solid, i.e. no dirty writes. https://en.wikipedia.org/wiki/MongoDB#Technical_criticisms