Intermediate
14:30 15:10

Event Sourcing with Kotlin, who needs frameworks!

with Nico Krijnen

Details

As Event Sourcing is a complicated topic we’ll start with a short introduction to some of the key concepts like Event Sourcing, CQRS, command pattern, and projections. Event Sourcing is not for everyone. It requires a significant shift in how you think about your data. Event Sourcing is also not always easy, so we’ll point out some pitfalls and guide you on when it’s worth using it and when you should stay away from it.

However, Event Sourcing is also super-valuable when it fits your needs! And if you approach it in the right way, it does not have to be as hard as you may think. With some live coding, we’ll build up an event sourced model using the CQRS pattern. Along the way, you’ll get a taste of how these techniques work in code and how typical Kotlin constructs like data classes, immutability, lazy properties, and functional style will help you to keep it all readable and easy to understand. You’ll see that you don’t need to start with a framework to do Event Sourcing and why Java doesn’t make it as easy as Kotlin does. The Kotlin language provides a lot of the fundamentals that you need and that allows you to keep everything simple and in your own control.

Prerequisite knowledge

Basic knowledge of CQRS and Event Sourcing concepts.

About the speaker

Nico Krijnen

Cloud Solution Architect at Luminis

Nico Krijnen is a Cloud Solution Architect at Luminis. He helps organizations to translate available options into practical solutions for complex problems. For a big chunk of his career, he disrupted the DAM space by building an innovative file management solution called Elvis, which is being used by media organizations all over the world. Besides leading teams and giving direction, he likes to roll up his sleeves and experience first-hand how (and whether) the latest technologies work in the real world. He is never shy of making unconventional choices to achieve radical results.

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