David Kjerrumgaard
David Kjerrumgaard is a Developer Advocate at StreamNative and a committer on the Apache Pulsar project. He is recognized for his expertise in real-time data streaming, messaging systems, and big data technologies. As author of Pulsar in Action and co-author of Practical Hive, he has established himself as a leading voice in the streaming data ecosystem.
An accomplished international speaker, David presents at conferences worldwide on big data, streaming technologies, and agentic AI. His technical contributions extend beyond the stage—he actively contributes to Apache NiFi and maintains his committer status on Apache Pulsar, directly advancing these open-source platforms.
Sessions
Stream
Dynamic Broker-Side Filtering for Kafka
Talk
KAFKA-6020 has been open for 7 years. This talk demos broker-side filtering for Kafka with sub-millisecond latency (p99 < 25ms). Live demo with working code shows how it reduces network costs, simplifies consumers, and enables new use cases. Real-world validation from financial services and logistics deployments.