Mahesh's Twentythird Law - JSON + NoSQL =/= Automatic Scale

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Throwing JSON documents into a NoSQL database is not going to automatically allow your system to scale.

Corollary
No, MongoDB is not the answer.

 Note
OK, MongoDB is pretty good from a prototyping perspective, but it will end up biting you in the butt...
In fact, the general response for anything other than prototyping should really be in two parts

  1. "Do you really know what you are doing?"
  2. "No you don't."



I'm getting pretty seriously curmudgeonly about this nowadays ("Get off my lawn", etc.).  People probably shouldn't be using anything NoSQL at all - they invariably end up shooting themselves in the foot...

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