How we can create an Index on MongoDB?

Question

I want to create Index on Mongo database for performance prespective, so could you please help me how I can do it?

Your help will be appreciated here.

Answer 1

The basic syntax is:

db.collection.createIndex(keys, options)

So, for example:

$ db.users.createIndex({"username" : 1})

See MongoDB Indexes for the full details.