Apache Druid

Apache Druid is a high-performance, real-time OLAP database built for sub-second analytics on event-driven data.

Key Features:

• Sub-Second Queries — Execute OLAP queries in milliseconds on high-cardinality datasets.
• Streaming Ingestion — Ingest data from Kafka, Kinesis, and other streams for real-time analysis.
• Column-Oriented Storage — Compress and index data for fast scans and aggregations.
• Tiered Storage — Automatically move historical data to cost-effective deep storage.
• Rich Aggregations — Approximate distinct counts, histograms, and quantiles at query time.

Whether you're analyzing scraping event streams, building real-time monitoring dashboards, or querying large crawl datasets, Apache Druid provides the speed and scale for interactive analytics.