ksqlDB
SQL interface for stream processing on Apache Kafka
About ksqlDB
ksqlDB provides a SQL interface for building stream processing applications on Kafka. Push and pull queries, materialized views, and connectors — all through SQL statements over Kafka topics.
Best for
Best for Kafka-centric teams wanting SQL-based stream processing
Pros & Cons
Pros
- SQL over Kafka — no Java required
- Push and pull query support
- Materialized views on Kafka topics
Cons
- Kafka-only — tightly coupled to Kafka ecosystem
- Less powerful than Flink for complex logic
- Confluent licensing changes
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