09 December 2018
30 November 2018
This Week in Elasticsearch and Apache Lucene - 2018-11-30
16 November 2018 Engineering
The Birthday Paradox (and Concurrently Indexing in Elasticsearch)
Our birthdays are a lot more likely to collide than we intuitively think. Find out how knowing that helped us improve concurrent indexing in Elasticsearch.
22 December 2016 Engineering
A Profile a Day Keeps the Doctor Away: The Elasticsearch Search Profiler
Back in the dark ages of Elasticsearch, understanding why a query was slow required experience, intuition, reading some tea leaves and making sure the moon was
16 December 2015 Engineering
Implementing a Statistical Anomaly Detector in Elasticsearch - Part 3
In the final article of this three-part series, we build a fully automated anomaly detector using Watcher to send email alerts.
02 December 2015 Engineering
Implementing a statistical anomaly detector in Elasticsearch - Part 2
In part 2 of this series on building a statistical anomaly detector, we graph the output in Timelion, a Kibana app for graphing time-series data.
23 November 2015 Engineering
Implementing a Statistical Anomaly Detector in Elasticsearch - Part 1
In this series, we implement a statistical anomaly detector to detect when correlated changes in variance occur, providing forewarning of a disruption.
12 August 2015 Engineering
Staying in Control with Moving Averages - Part 2
In Part 2, the Control Chart is used in tricky scenarios such as constantly increasing linear trends or cyclic/seasonal data.
03 August 2015 Engineering