Comparing apples to oranges really, but I suppose it's more accurate if you take into account all the people who are (or could be using) a relational database w

Comparing apples to oranges really, but I suppose it's more accurate if you take into account all the people who are (or could be using) a relational database without much issue and then switching over. The article is right though, I've heard scaling MongoDB into the hundreds of gigs to terabytes is an absolute nightmare for the operation team, the software is actually very cool when dealing with reasonably sized data that has an elastic structure. There are other "NoSQL" databases out there that pay more attention to scale, like HBase. My HBase cluster is just over a TB compressed, consistently churning 6k requests a second, without an issue.