Apache Druid
Real-time analytics database
⭐ 4.3/5 (1500 reviews)
About Apache Druid
Apache Druid is a high-performance, real-time analytics database designed for fast slice-and-dice analytics on large datasets. Used for powering interactive analytics applications.
Key Features
- Real-time ingestion
- Sub-second queries
- Column-oriented
- Streaming + batch
- Approximate algorithms
- Tiered storage
✅ Pros
- Excellent real-time performance
- Scalable
- Open source
- Battle-tested
❌ Cons
- Complex operations
- High resource requirements
- Steep learning curve
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