Hacker News comments on the article "MongoDB Days" here: http://gaiustech.wordpress.com/2013/04/13/mongodb-days/
Last week I attended MongoDB Day London. Now MongoDB itself is a technology that I’m fairly interested in, I can see where it would have its uses. But the problem is the people! They all talk like this:
* Some problem that just doesn’t really exist (or hasn’t existed for a very long time) with relational databases
* MongoDB
* Profit!
So anyway, since it’s free‡, there’s no reason not to evaluate MongoDB, and see if it suits your use cases. But just remember that these kids think they’re solving problems that IBM (et al) solved quite literally before they were born in some cases, and the features are probably already there in your existing database/technology stack (I have used Oracle for my rebuttals just because I am most familiar with it, but I expect the same is true for SQL Server and DB/2 as well). Talk to your friendly local DBA…