> one would think it would be optimized for repeat schema I don't think that's the problem Mongo is designed to solve. Mongo's promise was the ability to work

> one would think it would be optimized for repeat schema I don't think that's the problem Mongo is designed to solve. Mongo's promise was the ability to work with un- and semi- structured data, and it would make sense if its optimizations were focused on that problem, not on reducing overhead when someone tries to strongarm it into being MySQL. Generally speaking, if your data is structured well enough that you can define a schema ahead of time, you're better off with a traditional RDBMS, because that's the problem an RDBMS is designed to solve.