MongoDB vs MySQL: Which is best for you?

Costs on MongoDB can also grow faster than expected as data and traffic scale.

It doesn't compel you to follow specific schema, neither is it causing complexity on you

Biggest benefit that I see with MySQL is it supports addition of columns to desired position (using BEFORE and AFTER keyword), this basic functionality is not provided with premier tools like Postgre SQL.

Compared to other databases like PostgreSQL or Oracle, MySQL lacks some advanced features such as full-text search and partial indexes, which may be a limitation for certain use cases.