I'll give you a reason that not many people mention not to use Mongo. Schema definition acts as a form of documentation for your database. As someone that has c

I'll give you a reason that not many people mention not to use Mongo. Schema definition acts as a form of documentation for your database. As someone that has come into a legacy project built on Mongo, its a nightmare trying to work out the structure of the database. Especially as there is redundant copies of some data in different collections.