Druid

Apache Druid is a high performance analytics data store for event-driven data.

Druid is a data store designed for high-performance slice-and-dice analytics (“OLAP“-style) on large data sets. Druid is most often used as a data store for powering GUI analytical applications, or as a backend for highly-concurrent APIs that need fast aggregations. Common application areas for Druid include:

• Clickstream analytics
• Network flow analytics
• Server metrics storage
• Application performance metrics
• Digital marketing analytics
• Business intelligence / OLAP