How to make user's email unique in mongoDB?

Question

I am making a collection of user\'s data. This will be pretty basic consisting of user\'s email, user\'s password (hashed), and an array of strings.

{
    em         


        

Answer 1

You can do it by creating a unique index for your email field.

http://docs.mongodb.org/manual/tutorial/create-a-unique-index/