Use of mongoDB for one feature of our AEM application.

Hello All,

Till now, client AEM application has only public pages, there was no concept of User registration, Login. But now, we are introducing Gated pages, User Registration, Logic feature. Only registered users can see private pages. To implement this, team is thinking of utilizing MongoDB to save the user details. Anyone has used MongoDB with AEM application?  Could you please help me in this?

Thanks