Drupal 7 with Mongodb I am working on Drupal website, and I heard about the MongoDB module. I installed and enabled it, but I don't understand how it works. 

How can I switch all my data from MySQL to MongoDB?
Is it safe to purely depend on it? Can anyone tell me how to configure MongoDB with Drupal?
You currently cannot use MongoDB for all your data. The MongoDB module clearly states what it can store in your mongodb: Cache, Field storage, Session, Watchdog, Lock, Block and Queue. This cover most of your site data. But a SQL database will always be needed.

This tutorial gives configuration to put in your site settings.php to enable various MongoDB storage. But it may be outdated.