ksqlDB
Event streaming database for Kafka
⭐ 4.3/5 (1500 reviews)
About ksqlDB
ksqlDB is a purpose-built database for stream processing on Apache Kafka. It allows you to build event-driven applications using familiar SQL syntax directly on Kafka topics.
Key Features
- SQL on Kafka
- Materialized views
- Pull & push queries
- Connectors
- Windowing
- User-defined functions
✅ Pros
- SQL for Kafka streams
- Easy to learn
- Confluent integration
- Real-time
❌ Cons
- Kafka-only
- Resource-intensive
- Confluent-centric
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