Being a document database it's not a good candidate for your typical CRUD Web app that has relations and foreign keys and joins and all that. I wouldn't store

Being a document database it's not a good candidate for your typical CRUD Web app that has relations and foreign keys and joins and all that. I wouldn't store my main app database in there, I would use postgres (with django most probably) for that. I would use it to store meta data, that makes more sense in json format and that has fairly simple querying needs (no complex or flexible joins, sums, etc).