Server and the use of many collections

[Prasad_Saya]

Hello @Ody, welcome to the community.

@Ody

I wonder if I’ll need to config another server to manage things like users’ accounts, or if it’s possible to do it directly withing Mongodb

You can manage user accounts within MongoDB. Here is general information about security within MongoDB and the features: Security.

is there a limited number of collection recommended?

Here is a post about limitations:

Database and collection limitations

Please help me to get below limits What the limitation on maximum database size, collection size, document size [ 16GB upper limit ] With Latest MongoDB Version.

Also, general Frequently Asked Questions about MongoDB.