Apache Kafka is a battle tested stream-processing platform. Combined with Kafka Streams API, it’s possible to build scalable, fault-tolerant and distributed event driven systems.

In this talk, I will describe the key components of an event sourced system, and how simple building blocks can be combined using the powerful and declarative streams API to deliver business value. I will demonstrate possible solutions for the challenges of eventual-consistency and the object-relational impedance mismatch.