We are going to launch a service that will require between 1 and 2 GB for file storage per paid user. I am going to use GridFS for storing files. GridFS is a module for MongoDB that allows to store large files in de database.
I am pondering the different options for storing the database.
But since I am unexperienced at deployment and it is my first time with Mongodb I need your experience.
Criteria:
I want to spend my time developing my core business, that is, my own application. I am a Ruby on Rails developer. I do not like to mess with server configuration. Hence, I would like a fully managed hosting solution. But I would like to know about any other option, if you think it is worth it.
It should be able to scale. Cloud style. Pay as you go.
The lower the price, the better.
So far I known of these services:
https://mongohq.com/pricing
https://mongomachine.com/pricing
https://mongolab.com/about/pricing/
http://cloudcontrol.com/add-ons/mongodb/
And they seem to be OK for common needs, that is no file storage. But I am going to use GridFS, so the size matters. These services seems to scale, in price, quite poorly.
MongoHQ: The larger plan max storage is 20 GB. Seems like a very little storage, for GridFS.
MongoMachine: Flat price, 2.5$ per GB. I didn't found the limit. Seems like a good price, comparing the others.
MongoLab: 3.984 GB max, which I don't think I will hit, so perfect. 8$ per GB, quite costly.
CloudControl: The larger plan is 20 Gb. The custom service starts at 250€ plus some unspecified charge per GB.
What is your experience with these services? Any downtimes? Other possibilities?
Edit: Added meaning of GridFS
