SAK Meetup: Kafka Streams and the Suppress Operator

Backstory: A few months after I moved to Stockholm, I’ve decided to support the Stockholm Apache Kafka Meetup (SAK). So, to kick off the 2021 season, I gave a talk about a tutorial that I had created a few months earlier and published on https://kafka-tutorials.confluent.io.

Tutorial: Emit a final result from a time window

The abstract:

When processing event-streams, time-based operations are not the easiest to reflect on. However, they are essential! Many classic operations, such as grouping elements over a window or joining two streams are, by default, expected from a stream processing libraries like Kafka Stream. Among those features, emitting a final result at the end of a window has been for a long time impossible. So what is different with this operation? And what are the great powers you will unlock by using it in your application? Let’s refer to kafka-tutorials to answer those questions. As a warm-up for a year full of great Kafka meetups, this talk walks you through a particular Kafka tutorial. You will get a very concrete implementation of that classic exercise. It will discuss the concept that makes this final window result possible, and finally, you will have an overview of how kafka-tutorials works and how to contribute to it.

The slides:

The video is available at the Confluent Meetup Hub website