As a counterpoint, I to run ElasticSearch in production. The cluster is much smaller than others---having 12 nodes eating 32GB memory a piece, and handling onl

As a counterpoint, I to run ElasticSearch in production. The cluster is much smaller than others---having 12 nodes eating 32GB memory a piece, and handling only 50GB of data. I run a consumer-facing website from it, where all queries hit the ES cluster with limited caching at a pace of ~8,000 qps at peak for fairly heavy computation aggregations. ES scaling has consistently been simple as adding another box ever 3-6 months.