[dc-tech-fan]

Database: Mongo

We're using a 5 GB instance at MongoHQ with backups to S3.

Mongo is insane fast compared to what I'm used to with MySQL, and I love the JSON-based query syntax over SQL.

Not being able to do relational-type queries has made some things more difficult, like building "Top 10 List" of arbitrary data is a bit more tedious.