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Kafka Summit SF 2019

September 30 - October 1, 2019 | San Francisco

Kafka 102: Streams and Tables All the Way Down

Session Level: Intermediate

Streams and Tables are the foundation of event streaming with Kafka, and they power nearly every conceivable use case, from payment processing to change data capture, from streaming ETL to real-time alerting for connected cars, and even the lowly WordCount example. Tables are something that most of us are familiar with from the world of databases, whereas Streams are a rather new concept. Trying to leverage Kafka without understanding tables and streams is like building a rocket ship without understanding the laws of physics-a mission bound to fail. In this session for developers, operators, and architects alike we take a deep dive into these two fundamental primitives of Kafka’s data model. We discuss how streams and tables incl. global tables relate to each other and to topics, partitioning, compaction, serialization (Kafka’s storage layer), and how they interplay to process data, react to data changes, and manage state in an elastic, scalable, fault-tolerant manner (Kafka’s compute layer). Developers will understand better how to use streams and tables to build event-driven applications with Kafka Streams and KSQL, and we answer questions such as “How can I query my tables?” and “What is data co-partitioning, and how does it affect my join?”. Operators will better understand how these applications will run in production, with questions such as “How do I scale my application?” and “When my application crashes, how will it recover its state?”. At a higher level, we will explore how Kafka uses streams and tables to turn the Database inside-out and put it back together.


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