It’s not DNS There is a no way it’s DNS It was DNS from DNS Haiku The dark side When I started at synyx I chose to get a MacBook in order to be productive as quick as possible. I still had the cumbersome Linux desktop experience from my previous employer in mind. ;) At synyx, however, things are different: we have a highly skilled admin team that provides a very convenient environment to use Linux on laptops.

Bei der diesjährigen BEDCon ist synyx gleich doppelt vertreten gewesen. Nicht nur der Talk “Observability in einer Microservice Welt” von Andreas Weigel (@aendi) und Jakob Fels (@JakobFels) war dieses Mal eine Premiere. Auch unser Stand im Messe-Bereich der Konferenz hat das erste Mal zu Gesprächen, Diskussion und natürlich jede Menge synyx Stickern eingeladen. Dabei handelte es sich zwar nicht um den größten Stand, dafür wurde er aber komplett in der Bahn transportiert.

Message Delivery Characteristics First some theory about delivery semantics in messaging systems. When a system wants to communicate via a message broker the developer needs a clear understanding of the delivery semantics. At first one needs to know if and how often a message will be delivered to the broker (and potential consumers): At most once - the message is delivered at most once but also not at all.

This is the story of my team creating something awesome within one day. It begins in November of 2017 at 'Hack your Office', a 24-hour hackathon hosted in cooperation by my employer synyx and our customer dm-drogerie markt. Although it was an excellent hackathon, this is not the day I am refering to but it was on this day when the idea was born. Several of my team members from dm where participating in the hackathon, even Matthäus - one of our product owners - joined us.

This post outlines the steps needed to simultaneously deploy to Maven repositories and to GitHub Releases. Every time a tagged commit is pushed, a Travis CI build will be triggered automatically and start the release process. This blog post uses Sonatype Nexus as an example for a Maven repository manager. Preparing GitHub Releases Sergey Mashkov has written a Maven plugin that allows us to create a new release on our project’s releases page and upload our build artifacts to a release.

It was not our primary goal to use Behaviour Driven Development (BDD) in the project at a customer, but while finding and optimizing our agile software development process we recognized that we established the building blocks of BDD. It works quite well and offers a lot of space and flexibility for our future plans, switching our architecture to microservices. The project setup But let us start at the beginning of the project.

In this blog I will outline why we used Hazelcast for queueing messages in-memory distributed over a cluster and how we achieved higher resilience by persisting the queue’s content. I will explain the pitfalls and difficulties that we encountered and how I constantly switched between praising and condemning Hazelcast. The problem to solve I’m currently working in a project for a large customer data backend. The prod system consists of a load balanced cluster of five VMs each running two Tomcat instances hosting our application.

There are several different tools to maintain the internal structure of a java application available. The tools range from simple open source software like jdepend and degraph to full fledged architecture…

Ein bisschen aufgeregt waren wir dieses Mal schon. Im Gegensatz zu den vergangenen Events erwarteten wir am Samstag fast nur Kinder, welche noch nie bei der Devoxx4Kids mitgemacht haben. Wir…