Sjoerd Adema

Owner of Kristal software. Java, SpringBoot, GraphQL, Rest, DDD, EventSourcing, Kafka, Linux, Mac, Typescript, ES6, Docker, Kubernetes, Couchdb, React

[Sjoerd Adema @Kristalsoftware]

Last week I had a discussion with someone about Event Driven Architecture. I told him that I used Spring Boot events in a Spring Modulith application to communicate between boundaries. The first thing he said was: “isn’t this over engineering?” What do you think ?

[Sjoerd Adema @Kristalsoftware]

Keynote door Eric Evans op de DDD Europe 2026 in Antwerpen 😀

[Sjoerd Adema @Kristalsoftware]

First time joining the StrimziCon2026! #strimzicon2026

[Sjoerd Adema @Kristalsoftware]

Second day of DDD Europe 2023 Amsterdam. Everything about domains, bounded context, Event Driven Architecture, etc

[Sjoerd Adema @Kristalsoftware]

I’m happy to share that I’m starting a new position as Trainer Domain Driven Design at Eduvision Opleiding & Training! https://t.co/eS20KREf5x

[Sjoerd Adema @Kristalsoftware]

A little Eventstorming at the #DDDSummit & #MicroservicesSummit

[Sjoerd Adema @Kristalsoftware]

Distributed transactions with Sagas! #DDDSummit & #MicroservicesSummit

[Sjoerd Adema @Kristalsoftware]

#DDDSummit & #MicroservicesSummit in Berlin! It’s all about Bounded Context.

[Sjoerd Adema @Kristalsoftware]

Eventstorming with #EDSN and #Xebia in the Energie Domain. #DDD

[Sjoerd Adema @Kristalsoftware]

Coding with Uncle Bob at Rabobank Utrecht!

[Sjoerd Adema @Kristalsoftware]

Event Sourcing exercise at #JAX2018

[Sjoerd Adema @Kristalsoftware]

Workshop at #JAX2018 About domain driven design and the Lagom framework!

[Sjoerd Adema @Kristalsoftware]

This afternoon at the Rabobank a Java meet up. Talk about a nice server less framework #FnProject Java9 and JavaEE 8

[Sjoerd Adema @Kristalsoftware]

@marretak Super dat jullie "Inspiratie voor jou" hebben opgezet! Heel veel succes!

[Sjoerd Adema @Kristalsoftware]

Real world Java 9 by Trisha Gee

[Sjoerd Adema @Kristalsoftware]

#elasticsearch at the #DevCon17

[Sjoerd Adema @Kristalsoftware]

Luminis DevCon started!!

[Sjoerd Adema @Kristalsoftware]

Filip explained working with dynamic content in Angular: https://t.co/mXm8hM9JIH

[Sjoerd Adema @Kristalsoftware]

Yesterday at the #ngnl2017 I attended a great workshop by Manfred Steyer about angular lazy loading, AOT and Service Workers!

[Sjoerd Adema @Kristalsoftware]

Just attended 'code & comedy' at #Ordina. Interesting sessions! It's all about 'reactive programming' #rxjava