Session Description
Modern DevOps practices thrive on systems that are reliable, observable, and easy to evolve - qualities that event-sourced architectures naturally provide.
In this hands-on workshop, you’ll learn how to combine Domain-Driven Design (DDD) with CQRS and Event Sourcing using the Axon Framework and Kotlin to model and implement a small but complete domain.
Starting from a short Event Storming exercise, participants will explore the flow of domain events and commands, then step by step build a working event-sourced domain model:
- Understanding how CQRS cleanly separates write and read responsibilities
- Designing DDD Aggregates, Entities, and Value Objects
- Implementing Commands, Domain Events, Invariants, and Projections
- Exposing domain use cases through REST APIs
Finally, we’ll look at how event-sourced systems can evolve safely over time - introducing the basics of event versioning and upcasting, and discussing what can be replayed, rebuilt, or reset to keep systems healthy in production.
By the end, you’ll have a solid understanding of how to design, implement, and maintain traceable, evolvable, and DevOps-friendly event-sourced domain models with the Axon Framework and Kotlin.
Prerequisites: Basic knowledge of Kotlin or Java and Spring Boot. We’ll introduce the core DDD concepts along the way. Bring your laptop for hands-on coding!
Speaker
Technical Trainer, Software Engineer and Architect @ Codeartify
Oliver Zihler is a dedicated Software Crafter specialising in Business-Domain-Driven Software Design, identifying and addressing Code Smells through Refactoring, architecting maintainable software solutions, and agile software development. He actively organises Tech Excellence meetups and conferences, fostering community learning and innovation. At Codeartify, Oliver serves as a trainer, software engineer, and architect, guiding teams to deliver robust solutions. Outside of coding, he balances work and life through his passion for sports and guitar, bringing creativity and energy into every endeavour.
Speaker
Codeartify GmbH, CEO, Technical Trainer, IT Event Organizer
Alina Liburkina is a CEO of Codeartify GmbH. She is a technical trainer, software engineer and architect, and (IT) event organizer passionate about DDD, Refactorings, Hexagonal and Clean Architecture. She is a co-organizer of an international conference and meetups TechExcellence. Moreover, she promotes and introduces XP techniques in the teams she works with. She loves to gather and share her knowledge with others through pair or mob programming, presentations or hands-on workshops.
