Real-time analytics database for high-speed queries
Visit WebsiteReviews onG2
31 reviews trackedThe Bottom Line
Entry price
Free, no paid tier
Biggest pro
Real-time analytics
Biggest con
Complex operations
TL;DR - Apache Druid
- Apache Druid is a real-time analytics database designed for sub-second OLAP queries on streaming data
- It ingests data in real-time and enables instant slice-and-dice analysis of billions of rows
- Free and open-source, with Imply cloud service for managed deployments
Pricing: Free forever
Best for: Individuals & startups
4.3/5 across review platforms
What is Apache Druid?
Druid handles analytics queries at speeds that make traditional databases seem frozen. Slice and dice billions of rows interactively, with sub-second response times even for complex aggregations.
The column-oriented storage and indexing are built specifically for OLAP workloads. Real-time ingestion means you can query data seconds after it arrives. Druid scales horizontally to handle whatever data volume you throw at it.
Companies processing event streams or building analytics dashboards choose Druid when response time matters as much as throughput.
Available on: Web
Pros & Cons
Pros
- Real-time analytics
- High performance
- Good for time-series
- Column-oriented
- Open source
Cons
- Complex operations
- Learning curve
- Resource intensive
- Setup complexity
- Documentation dense
Ratings Across the Web
4.3(31 reviews)
Ratings aggregated from independent review platforms. Learn more
Key Features
Real-time analyticsOLAPSub-second queriesHigh concurrencyStreaming ingestionOpen source
Pricing Plans
Most Popular
Open Source
Free
Self-hosted
- Real-time analytics
- OLAP queries
- High performance
- Apache license
Reviews
4.3/5
Across 31 verified user reviews on G2
Add your hands-on experience to help the next buyer.
Best Apache Druid Alternatives
Top alternatives based on features, pricing, and user needs.
Still deciding?
Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.
Explore More
Apache Druid FAQ
Is Apache Druid free?
Yes, Druid is open source under Apache 2.0 license. Self-hosting is free. Commercial managed services like Imply provide enterprise support and hosted options.
What is Apache Druid?
Druid is a real-time analytics database. Designed for fast OLAP queries on event data. Sub-second queries on billions of rows. Used for dashboards, monitoring, and real-time analytics.
What is Druid used for?
Real-time analytics dashboards, monitoring systems, clickstream analysis, and time-series data. Netflix, Airbnb, and eBay use it for high-performance analytics.
Druid vs ClickHouse?
Both are fast analytics databases. ClickHouse is simpler to operate. Druid has better real-time ingestion. ClickHouse for batch analytics; Druid for streaming/real-time use cases.
How does Druid handle real-time data?
Druid ingests data from Kafka or Kinesis in real-time. Data is queryable within seconds of arrival. Segment-based architecture separates real-time and historical data.
Source: druid.apache.org