I was recently at an Elasticsearch meetup hosted by HomeAway and pleased to see that may of the patterns that emerged at Bazaarvoice were generally repeated in HomeAway's deployment. I definitely encourage anyone considering Elasticsearch to explore its utility for more than just logging. So many times I read about or hear folks using Elasticsearch to index "billions of documents!!" only to find that only a few million documents are actually in an open index.
Does anyone know of any heavy users of Elasticsearch for non-logging workloads in AWS? So far it seems like most of these folks are running out of a colo or their own data center. I've been running Elasticsearch in AWS for a few years now and simply can't imagine dealing with the inconvenience of managing the hardware down to the specific number of nodes. (If you asked me, I'd say I don't know how many nodes -- lots!)