[InGodsName]

Old versions of mongo were very bad.

We accured lots of downtime due to mongo.

But later versions were rock solid and I've matainer mongo installations at many startup and SMEs once you setup alertd for disk/memory usage, off you go. Works like charm 99% of the times.

[kbenson]

MogoDB is proof that with the right strategy, marketing and luck, you really can fake it until you make it.

Not that that's really a surprise or was unknown, it's just fairly new to see in the open source ecosystem instead of the enterprise one.

[badloginagain]

I'd posit its more a matter of maturing a new paradigm. There's a lot more edge cases you have to cover as NoSQL became more popular for production-at-scale.

SQL has decades of production maturation, and has wider domain knowledge.

[kbenson]

I'm sure there's some of that. But a lot of the early problems were a bit more weighted towards poor engineering in general, IIRC. For example, I seem to recall an early problem was truncating large amounts of data on crash occasionally.

[bigiain]

That's probably true.

Unfortunately the number of my customers who would sign off on just "two nines" is approximately zero...