A meetup talk about an of eBay's "Atlas" anomaly detector system in Elasticsearch. Companion talk to the blog series:
https://www.elastic.co/blog/implementing-a-statistical-anomaly-detector-part-1
https://www.elastic.co/blog/implementing-a-statistical-anomaly-detector-part-2
https://www.elastic.co/blog/implementing-a-statistical-anomaly-detector-part-3