They should instead fire some of their technical decision makers and use the $100M as compensation for pain and suffering for early adopters. Choosing MongoDB for a project was one of the biggest failures in my career.
Re:MongoDB Is Raising Another $100M
by rational-future on Friday January 09, 2015 @05:45PM
(#8864976)
What do you mean by infrastructure costs?
I'm assuming just their test farm dwarfs most regular deployments.
They have a huge test matrix. Sharding tests, performance tests, and large data tests probably take a long time.
You can see their test matrix here: https://mci.10gen.com/
and the driver tests here: https://jenkins.mongodb.com/
Also they run https://mms.mongodb.com/ which does backup and monitoring
Even $1M buys a lot of test equipment.
One challenge that companies find as they try to scale is they have to add a lot of Sales and Marketing costs well before they receive any revenue, so there's a cost bump despite low growth in engineering. This is compounded if there's a professional services component.