ElasticSearch is a high-performance search engine based on Apache Lucene. It is growing in popularity which means that more and more users are running part of their search patterns against the information stored on this datastore. However, it’s quite difficult to find a comprehensive set of best practices that will assist in efficiently running large scale clusters. In this talk, I will cover tuning parameters and approaches that will help you to run fast, efficient, and well-written queries on stable, performant clusters. I’ll offer tips and tricks based on my experience that will help you to make some informed choices when building your own large scale cluster.