Dmitry is a software developer with 12 years of professional experience working at Canoo Engineering AG. His topics of interest include concurrency, performance and tooling. He is one of the organizers of the JCrete unconference. He has been a speaker at JokerConf 2015 and JavaLand 2016.

Sebastian Daschner is a Java freelancer working as a Consultant / Software Developer / Architect and is enthusiastic about programming and Java (EE). He is participating in the JCP, serving in the JSR 370 and 374 Expert Groups and hacking on various open source projects on Github. He is a Java Champion, JavaOne 2016 Rockstar and has been working with Java for more than 7 years.

Besides Java, Sebastian is also a heavy user of Linux and container technologies like Docker. He evangelizes computer science practices on blog.sebastian-daschner.com and on Twitter via @DaschnerS.

When not working with Java, he also loves to travel the world – either by plane or motorbike.

Andres is a Java/Groovy developer and a Java Champion with more than 17 years of experience in software design and development. He has been involved in web and desktop application development since the early days of Java.

Andres is a true believer in open source and has participated on popular projects like Groovy, Griffon, and DbUnit, as well as starting his own projects (Json-lib, EZMorph, GraphicsBuilder, JideBuilder). Founding member of the Griffon framework and Hackergarten community event.

@aalmiray

LOCATION: Basel

On their tour to BaseOne through different Java User Groups in Italy, Germany and Switzerland the Java Champions Dmitry Vyazelenko, Sebastian Daschner and Andres Almiray are stopping in Zurich and Basel.

Using JMH in a real world project

SPEAKER: Dmitry Vyazelenko   COMPANY: Canoo Engineering AG

Many of you have already heard about JMH and probably even played with it to benchmark some code. But how would you use it in a real project? Which problems can it help to solve?

In this talk I would like to share the experience of using JMH library to drive performance optimizations and track performance regressions. You’ll learn how we use JMH, which issues and pitfalls were encountered and overcome along the way.

And since a measurement is not an end in itself, I will show you what can be a result of using the benchmark-driven approach to performance optimizations. The use-cases will demonstrate issues and solutions that helped bring the performance of our project to its next level.

LEVEL OF TALK: Intermediate
LANGUAGE: Talk: en / Slides: en

When, why and how to CQRS

SPEAKER: Sebastian Daschner   COMPANY: Freelancer

Most of today’s enterprise applications base on a CRUD data model that is simple and straightforward to implement. Another concept of how to model applications is Command Query Responsibility Segregation (CQRS) that enables interesting solutions and use cases, especially with rising demands of scalability. In this session, I’ll show the concept and benefits of CQRS, to which other buzzwords such as eventual consistency, event-driven architectures and event sourcing it is related and how to realize a CQRS application. The questions whether this concept can be realized with Java EE technology, where the framework already offers solutions and where it has to be extended will be answered. Most of the time will be spent live-coding and examining the 'devil is in the details' cases of both approaches.

LEVEL OF TALK: Beginner
LANGUAGE: Talk: en / Slides: en

Making the Most of Your Gradle Build

SPEAKER: Andres Almiray   COMPANY: Canoo Engineering AG
SLIDES: 170914_Andres_Almiray_gradle2017.pdf

Maven has been the dominant build tool in the Java space for quite some time now. While it's a proven technology it's certainly aged, there are new and better alternatives out there. Gradle is perhaps the one that's better positioned to succeed Maven as the build tool of choice.

Since 2012 Gradle adoption has skyrocketed. Not only do popular and big open source projects, such as Spring and its portfolio, Hibernate and Groovy, have migrated to Gradle but large enterprises too. Not to forget that Gradle is the de facto build tool for Android applications since 2013.

LEVEL OF TALK: Beginner
LANGUAGE: Talk: en / Slides: en

Dmitry is a software developer with 12 years of professional experience working at Canoo Engineering AG. His topics of interest include concurrency, performance and tooling. He is one of the organizers of the JCrete unconference. He has been a speaker at JokerConf 2015 and JavaLand 2016.

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Sebastian Daschner is a Java freelancer working as a Consultant / Software Developer / Architect and is enthusiastic about programming and Java (EE). He is participating in the JCP, serving in the JSR 370 and 374 Expert Groups and hacking on various open source projects on Github. He is a Java Champion, JavaOne 2016 Rockstar and has been working with Java for more than 7 years.

Besides Java, Sebastian is also a heavy user of Linux and container technologies like Docker. He evangelizes computer science practices on blog.sebastian-daschner.com and on Twitter via @DaschnerS.

When not working with Java, he also loves to travel the world – either by plane or motorbike.

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Andres is a Java/Groovy developer and a Java Champion with more than 17 years of experience in software design and development. He has been involved in web and desktop application development since the early days of Java.

Andres is a true believer in open source and has participated on popular projects like Groovy, Griffon, and DbUnit, as well as starting his own projects (Json-lib, EZMorph, GraphicsBuilder, JideBuilder). Founding member of the Griffon framework and Hackergarten community event.

@aalmiray

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