Druid
Distributed, column-oriented, real-time analytics data store
Apache Druid is a distributed, column-oriented analytics database built for fast slice-and-dice queries on large event streams. It targets teams running real-time dashboards over clickstream or telemetry data. It is deployed via Docker Compose or Helm.
Key features
- Sub-second OLAP queries
- Real-time streaming ingestion
- Column-oriented storage
- Horizontally scalable
Pros & cons
Strengths
- Very fast aggregations
- Handles streaming and batch
- Proven at scale
Trade-offs
- Complex multi-node architecture
- Weak joins and updates
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