[jeletonskelly]

I've been using it for years in production now. Hell, there was a strangeloop talk about our use of it. We're using Dynamo for storage.

I found working with Datomic really nice. I like how I can express queries using clojure. It also has some great performance for reads and the data cache cuts down on those reads from Dynamo, which keeps the AWS bill down.

I did not like the way schema worked in the beginning. You had to make sure you had it right from a very early stage of development and that can be difficult if requirements change, but they've addressed that in later versions. It's also probably the most complicated part of our infrastructure, which is 100% run on AWS. You've got 2 transactors (high availability) and X peers, you need to deploy a new version of Datomic on them. Coordinating that while minimizing downtime is no simple task.