Apache Druid

Druid is an open-source, column-oriented, distributed data store written in Java. It’s designed to quickly ingest massive quantities of event data, and provide low-latency queries on top of the data.

It’s an OLAP analytical, time-series and search system:

Vu Trinh on LinkedIn: #dataengineering #realtimeanalytics #softwareengineering #apachedruid…
Compute and Storage Separation

The creator is Eric Tschetter. More on Apache Druid Turns 10: The Untold Origin Story - m. e. driscoll.

# UNNEST JSONs

Druid v26.0.0 is out (2023-05-23). Love the UNNEST arrays feature; super handy.

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SELECT order_id, each_item FROM orders, UNNEST(items) as unnested(each_item)

more on Release Druid 26.0.0 · apache/druid · GitHub

• Deep.BI: Open-Source Apache Druid Support

• ! Druid wiki
• Druid Summit 2020
• Druid Architecture overview
• Druid- Processes and Servers
• The Apache Druid Enterprise MCP Server Tutorial - YouTube

References: Druid wiki Why Druid Why not Druid The Architecture of Druid Modern OLAP Systems Joins with Druid