Java User Group Switzerland
Postfach 2322 • 8033 Zürich
info@jug.ch • www.jug.ch
Events
Past events 2021
Online 14.12.2021
Async Code Reviews Are Killing Your Company's Throughput
SPEAKER: Dragan Stepanović COMPANY: HelloFresh
"Never had a PR over 300 LoC that didn't look good to me". We've all been there. The PR is so big you don't even bother commenting. It's already too late to build the quality in. You make a sad face, comment "LGTM", and click approve.
Luzern 24.11.2021
Java 17
Die relevanten Features der neuen LTS-Version
SPEAKER: Falk Sippach COMPANY: embarc Software Consulting GmbH
KEYWORDS: Language, Open Source, Technology, Tools
Seit einigen Jahren kommen nun schon halbjährlich neue Java Major-Releases heraus. Dieses Vorgehen hat sich etabliert und funktioniert erstaunlich gut. Natürlich dürft Ihr nicht den Funktionsumfang von den früheren Versionen (9 und älter) erwarten. Dafür bekommt Ihr als Entwickler aber viel regelmässiger die nächsten Änderungen mit. In den Preview-Phasen kann sogar Feedback gegeben und somit die aktive Weiterentwicklung von Java mitgestaltet werden. Alle drei Jahre erscheinen zudem Long-Term-Support-Versionen, die länger mit Updates und Patches versorgt werden. Im Herbst 2021 stand mit der Version 17 wieder ein solches LTS-Release an, für welches in den letzten 3 Jahren jede Menge interessante neue Funktionen entwickelt wurden.
Online 23.11.2021
Bug Free
21 tricks to reduce the space available for bugs
SPEAKER: Johan Martinsson COMPANY: Independent dev. Craftsman
KEYWORDS: Language, Lessons learned
Get rid of whole families of bugs for good with 21 tricks to reduce the space available for bugs.
Online 18.11.2021
Viele Wege führen vom Source Code zum Container Image
SPEAKER: Matthias Haeussler COMPANY: Novatec Consulting GmbH
Ein typischer Workflow in moderner Software Entwicklung beinhaltet oft folgende Schritte: Den Code in eine git Repo, kompilieren, ein Container Image bauen, das Image in eine Registry und Deployment auf einen Kubernetes Cluster.
Online 09.11.2021
javax.measure bringt verständliche Einheiten in die Software
SPEAKER: Felix Schultze COMPANY: bridgingIT GmbH
KEYWORDS: Language, Technology, Tools, Open Source
Einheiten im Code bieten immer wieder Herausforderungen. Wofür stand nochmal der eine “double” Wert, wofür der andere “int”? Sind die Dinger “Metrisch”, im “U.S. customary system” oder was ganz eigenes? In diesem Vortrag soll ein Überblick über die Möglichkeiten ausgehend von der Java API javax.measure gegeben werden. Ausserdem soll darauf eingegangen werden, wie man die Werte persistiert oder auch in Frontend Clients (v.a. Angular, aber nicht nur) benutzen kann. Und die wichtigste Frage: Was hat das Ganze mit der Raumfahrt zu tun?!?!?!?
Online 02.11.2021
Mistakes and Trade-offs when optimizing the hot-path
When premature optimization becomes early optimization
SPEAKER: Tomasz Lelek COMPANY: Datastax
KEYWORDS: Methods, Tools, Lessons learned, Architecture
When we are building our systems, the performance requirements are essential.
Having SLA’s data, we can build performance tests in a way that allows us to reason about the system before production deployment. An important observation related to many systems is that the code that brings most of the business value often occupies a small percentage of the whole codebase. This observation is based on the Pareto principle and was validated in many business domains, not only software engineering.
Online 26.10.2021
Remote Pair Programming
SPEAKER: Adrian Bolboacă COMPANY: Mozaic Works
Pair programming is great when done well and awful when done... not so well.
Online 19.10.2021
Architecturally-evident Java Applications with jMolecules
SPEAKER: Oliver Drotbohm COMPANY: VMware Tanzu
KEYWORDS: Architecture, Methods, Technology, Tools
Java applications are usually written using a certain framework or at least based on a particular platform. Some of them provide means to express architectural concepts, but usually, there's a gap between architectural and design patterns and the actual code. Closing that gap is a challenge, and it's hard to separate code from technology.
Online 29.09.2021
7 techniques to tame a Legacy codebase
SPEAKER: Nicolas Carlo COMPANY: Centered
KEYWORDS: Lessons learned
We spend most of our time changing existing code. Often, there’s no test and the authors are long gone! It feels like a pain because you're always in a hurry, rushing to ship new features and bug fixes before the end of the Sprint… But what if you had a secret weapon? Let me share with you 7 concrete techniques that will help you regain control of any Legacy.
Zürich 28.09.2021
The Art of Software Reviews
SPEAKER: Gernot Starke COMPANY: INNOQ
KEYWORDS: Architecture
Jede Software besitzt „Potenzial“, also „besser geht immer“. Aber bevor wir anfangen, wild an unseren Systemen zu verschlimmbessern, benötigen wir zuerst einen ordentlichen Überblick über dessen Stärken und Schwächen.
Zürich 15.09.2021
Why Jakarta EE Developers are First-Class Citizens on Azure
SPEAKER: Edward Burns COMPANY: Microsoft
Jakarta/Java EE is an important technology to support on Azure. Enterprise Java is a heterogenous ecosystem with as much as a third of workloads still running on Jakarta EE application servers such as WebLogic, WebSphere/Open Liberty, JBoss EAP, WildFly, and Payara. This is particularly true for large enterprises that need to lift and shift their existing mission-critical, largely monolithic applications to Azure. Traditionally, Azure has not focused on strong support for such workloads but that is changing now and going forward.
Basel 14.09.2021
How Microsoft Learned to Love Java
Is their money green?
SPEAKER: Edward Burns COMPANY: Microsoft
This session is a fast-paced tour of all things Java and Azure at the modern Microsoft of today. We will first talk about the why, how and what of Java and Microsoft. We will then dive right into the broad range of tools, services and APIs that Microsoft offers around Azure for Java developers. We will show a small but representative demo of a Java application most developers would feel familiar with running well on Azure. Lastly, we will discuss the road map for what Java developers can expect from Microsoft in the future. This session is as much about sharing what Microsoft offers today as it is about listening to what the Java community wants to see from Microsoft tomorrow.
Luzern 13.09.2021
Why Jakarta EE Developers are First-Class Citizens on Azure
SPEAKER: Edward Burns COMPANY: Microsoft
Jakarta/Java EE is an important technology to support on Azure. Enterprise Java is a heterogenous ecosystem with as much as a third of workloads still running on Jakarta EE application servers such as WebLogic, WebSphere/Open Liberty, JBoss EAP, WildFly, and Payara. This is particularly true for large enterprises that need to lift and shift their existing mission-critical, largely monolithic applications to Azure. Traditionally, Azure has not focused on strong support for such workloads but that is changing now and going forward.
Zürich 09.09.2021
CH Open Workshop-Tage 2021
in Zusammenarbeit mit jug.ch
SPEAKER 1: Jürg Ritter COMPANY: Red Hat
SPEAKER 2: Reto Kessler COMPANY: Now.New.Next
SPEAKER 3: Claire Born COMPANY: Now.New.Next
SPEAKER 4: Christian Heitzmann COMPANY: SimplexaCode AG
SPEAKER 5: Thorben Stangenberg COMPANY: 42talents.com
SPEAKER 6: Michael IndenSPEAKER 7: Boris Rudolf COMPANY: Baloise Group
SPEAKER 8: Florian Bruhin COMPANY: Bruhin Software
SPEAKER 9: Florian Kammermann COMPANY: Swisscom
SPEAKER 10: Christiane Pousa Ribeiro COMPANY: Swisscom
SPEAKER 11: Arthur Gassmann COMPANY: Swisscom
SPEAKER 12: Raphael Ritter COMPANY: 2BIT GmbH
SPEAKER 13: Raphael Ritter COMPANY: 2BIT GmbH
SPEAKER 14: Felix Egli COMPANY: 2BIT GmbH
KEYWORDS: Hands-On, Technology, Lessons learned, Tools
Continuous Integration / Continuous Delivery (CI/CD) Prozesse werden mittlerweile in vielen Softwareentwicklungsprozessen gelebt. Ein wichtiger Baustein für diese Prozesse ist ein Build Tool wie Jenkins. Ein solches Build Tool hilft beim Builden, Testen, Releasen und Deployen von Software.
Zürich 08.09.2021
CH Open Workshop-Tage 2021
in Zusammenarbeit mit jug.ch
SPEAKER 1: Daniel Eichhorn COMPANY: ThingPulse GmbH
SPEAKER 2: Marcel Stör COMPANY: ThingPulse GmbH
SPEAKER 3: Philipp Murkowsky COMPANY: Puzzle ITC GmbH
SPEAKER 4: Thorben Stangenberg COMPANY: 42talents GmbH
SPEAKER 5: Michael IndenSPEAKER 6: Roman Bertolami COMPANY: dsi engineering ag
SPEAKER 7: Florian Lüscher COMPANY: dsi engineering ag
SPEAKER 8: Matthias Graf COMPANY: ti&m
SPEAKER 9: Simon Schlauri COMPANY: Ronzani Schlauri Anwälte
SPEAKER 10: Daniel Ronzani COMPANY: Ronzani Schlauri Anwälte
SPEAKER 11: Remo Schenker COMPANY: Zühlke Engineering AG
SPEAKER 12: Bernhard Lutzmann COMPANY: Freelancer
SPEAKER 13: Danilo Biella COMPANY: SPF-Consulting
SPEAKER 14: Dravec Barbara COMPANY: Technit Discovery Engine GmbH
SPEAKER 15: Benjamin Affolter COMPANY: acend.ch
SPEAKER 16: Johann Gyger COMPANY: acend.ch
KEYWORDS: Hands-On, Technology, Lessons learned, Tools
Der ESP32 ist ein äusserst vielseitiger und kostengünstiger Mikrcontroller, der sich hervorragend für verschiedenste IoT Projekte eignet. Er bringt nicht nur ein WiFi Modul mit, sondern verfügt auch über zahlreiche Erweiterungen gegenüber seinem „kleinen Bruder“ ESP8266: Bluetooth, mehr RAM, Dual Core Prozessor, Ultra Low Power Kern und mehr I/O Pins ermöglichen es viele spannende Projekte zu entwickeln.
Zürich 07.09.2021
CH Open Workshop-Tage 2021
in Zusammenarbeit mit jug.ch
SPEAKER 1: Paolo Carta COMPANY: Freelance Consultant
SPEAKER 2: Michael IndenSPEAKER 3: Matteo Baiguini COMPANY: Swissblock Technologies
SPEAKER 4: Patrick Baumgartner COMPANY: 42talents
SPEAKER 5: Mohamed Ben Hajla COMPANY: Euraconsult
SPEAKER 6: Justus Graumann COMPANY: Swiss RE
SPEAKER 7: Sascha Demarmels COMPANY: Kommunikation 3.0
SPEAKER 8: Matthias Aerni COMPANY: agilepower Consulting
SPEAKER 9: Markus Leutwyler COMPANY: makehumantechnology.org
SPEAKER 10: Jonas Felix COMPANY: letsboot.com
KEYWORDS: Hands-On, Technology, Lessons learned, Tools
Kubernetes is becoming the de-facto standard in order to run and manage applications at scale.
It was designed to run stateless applications abstracting the underlying infrastructure and automate all operational tasks. Nowadays, it is used to run almost every type of application, including stateful workloads.
Online 02.09.2021
Debugging distributed systems
SPEAKER: Bert Jan Schrijver COMPANY: OpenValue
KEYWORDS: Architecture, Lessons learned, Technology, Tools
Nowadays, most software projects are distributed systems: components are located on different networked computers which communicate and coordinate their actions by passing messages.
Online 24.08.2021
Application behaviour: exposed
Delight everyone with insightful dashboards
SPEAKER: Etienne Dysli Metref COMPANY: SWITCH
KEYWORDS: Methods, Open Source, Technology, Tools
What's your application doing when you're not looking? It produces usage data that's just there, waiting to be brought to light! In this talk, we'll explore multi-dimensional monitoring tools and how they help us make sense of application metrics from an operational view as well as from a business perspective. We'll see how simple integrations like metrics from a Spring Boot application collected by Prometheus and visualised with Grafana can net you quick insights into what happens in production. Adding your own metrics is now easier with Micrometer, this allows us to measure what the business cares about and help inform their decisions. Instrument your code and run that dashboard you've been dreaming of!
Online 14.07.2021
Java After Eleven
SPEAKER: Nicolai Parlog COMPANY: nipafx
Most projects that updated past Java 8 decided to stick to the LTS release 11. The new cadence created the illusion of not much happening after that, but nothing could be further from the truth - with new language features like switch expressions, text blocks, records, and sealed classes, Java is moving faster than ever.
Online 29.06.2021
An Introduction to Residuality Theory
Toward a science of architecture
SPEAKER: Barry O’Reilly COMPANY: Black Tulip Technology
KEYWORDS: Architecture
Residuality theory is a revolutionary new theory of software design that aims to make it easier to design software systems for complex business environments.
Online 22.06.2021
The future of programming
by Robert C. Martin (Uncle Bob)
SPEAKER: Robert C. Martin COMPANY: Uncle Bob Consulting LCC
Walk through the past with Uncle Bob as he describes the history of software development, and uses that as a trajectory to plot the future of Software, Agile, and Software Craftsmanship.
Online 08.06.2021
Coffee to go mit einem Schäumchen aus der Cloud
Cloud basierte Funktionserweiterung von Kaffemaschinen mit Kafka und Kubernetes
SPEAKER 1: Patrick Wachsmuth COMPANY: Schaerer AG
SPEAKER 2: Jonas Alder COMPANY: Zühlke Engineering AG
KEYWORDS: Architecture, Lessons learned, Technology
Früh auf den Beinen - und kein Kaffee? Von wegen!
Online 25.05.2021
Connascence: beyond Coupling and Cohesion
SPEAKER: Marco Consolaro COMPANY: ALCOR academy
KEYWORDS: Architecture
There are many concepts, principles and rules to discuss the design of source code.
Like SOLID, Code Smells, Cohesion and Coupling, LCOM4, and so on...
Online 20.05.2021
Triple JUG – 3 Länder, 3 Newcomer, 3 Sessions
3 Kurzvorträge aus drei Ländern
SPEAKER 1: Alexander Rothe COMPANY: Spread Group
SPEAKER 2: Javid Asgarov COMPANY: ATOS
SPEAKER 3: Donato Wolfisberg COMPANY: CSS-Versicherung
KEYWORDS: Language, Technology, Methods
Dieser Event ist etwas ganz besonderes! Zusammen mit zwei anderen Java User Groups, einer aus Deutschland und einer aus Österreich, führen wir ein gemeinsames Online-Event mit drei Kurzvorträgen durch. Jede der drei User Groups stellt dabei einen Redner. Wir möchten Mitglieder unserer User Groups fördern, selbst Vorträge zu halten und hoffen, damit Raum bieten zu können
Online 19.05.2021
Real World Event-Driven Clean Architecture
SPEAKER 1: Matthias Brun COMPANY: dsi engineering ag
SPEAKER 2: Florian Lüscher COMPANY: dsi engineering ag
KEYWORDS: Architecture, Concept, Hands-On, Lessons learned
Event-Driven und Clean Architecture sind aktuell ziemlich populär, aber wie sieht die Umsetzung einer solchen Anwendung in der Praxis aus? Dieser Vortrag zeigt anhand der Steuerungssoftware eines automatisiertes Kleinteilelagers, wie diese Konzepte mit Java umgesetzt werden können. Kein Demo Beispiel sondern produktiver Code, welcher tausende von Lagerbewegungen pro Tag koordiniert.
Online 11.05.2021
Entwickle In-Memory Datenbank-Applikationen & Microservices mit Java und MicroStream
SPEAKER: Markus Kett COMPANY: MicroStream Software GmbH
KEYWORDS: Architecture, Open Source, Product, Tools
Seit 20 Jahren ist Java die führende Programmiersprache. Dennoch wird Java den Ruf nicht los, kompliziert, schwergewichtig, träge und speicherhungrig zu sein. Und nun scheinen auch noch andere Sprachen und vor allem moderne Serverless-Ansätze Java mehr und mehr den Rang abzulaufen. Wie steht es tatsächlich um Java, wie gut eignet sich Java für die Cloud, wie geht es mit Java weiter und warum sollte man auch in Zukunft auf Java setzen?
Online 05.05.2021
Die neue Schule der Softwarearchitektur
Über Architekturarbeit in agilen Kontexten
SPEAKER: Stefan Toth COMPANY: embarc
KEYWORDS: Architecture, Concept, Methods
In der heutigen Architekturpraxis sind unterschiedliche Denkschulen und Hintergründe anzutreffen. Vertreter der klassischen Architektursicht gehen dabei drastisch anders mit Architekturproblemen um, als es Vertreter der neuen Schule machen, die in Start-ups und „IT First“-Unternehmen groß geworden sind.
Online 27.04.2021
Fireside chat with Sandro Mancuso
SPEAKER: Sandro Mancuso COMPANY: codurance
KEYWORDS: Meeting, Networking, Lessons learned
We will have an online fireside chat with Sandro in the first hour of this online event. You can ask questions live to him via the Q&A Tab, and he will try to answer them at his best and share his huge knowledge and insights. You can also just watch the discussion and don’t have to actively participate.
Online 13.04.2021
Docs-as-Code, arc42, AsciiDoc, Gradle & Co. im Einsatz
SPEAKER: Ralf D. Müller COMPANY: DB Systel
KEYWORDS: Architecture, Methods, Technology, Tools
Der Vortrag zeigt, wie Du die Qualität Deiner Dokumentation erhöhst und gleichzeitig den Aufwand zur Pflege reduzierst, indem Du Deine Dokumentation genauso wie Deinen Code verwaltest und in den Build integrierst. Anhand des Beispiels einer Architekturdokumentation, zeigt Ralf, wie Du mit dem arc42-Template im AsciiDoc-Format und Gradle als Build-Tool einfach Diagramme in Ihre Dokumentation integrierst, Stakeholder-spezifische Dokumente erzeugst und verschiedene Ausgabeformate generierst. Reviewfähige PDF-Dokumente? Publishing nach Confluence? Integration einer Präsentation? Alles kein Problem! Einige Teile der Doku kannst Du sogar automatisiert testen!
Online 30.03.2021
Good Habits for Developers
SPEAKER: Alex Bolboaca COMPANY: Mozaic Works
The human brain is habit-driven. We know from recent research that habits are quasi-impossible to break; they can only be replaced by other habits. We also know that you are driven by habits for most of the time during the day, often without even noticing. Some of these habits are not helpful or even harmful. Many programmers I know only grow to 10% of their potential due to their bad habits.
Online 25.03.2021
Mitgliederversammlung 2021
Stimmberechtigte Mitglieder sind herzlich eingeladen, an der diesjährigen Versammlung teilzunehmen - Gäste - auch Mitarbeiter von Firmenmitgliedern -, welche nicht stimmberechtigt sind, können wir leider situationsbedingt dieses Jahr keine zulassen.
Online 24.03.2021
Time Travel Debugging Java Applications
A new breed of debuggers let you step and run backwards as well as forwards to see exactly what your code really did.
SPEAKER: Greg Law COMPANY: Undo Ltd
KEYWORDS: Methods, Tools, Technology
Time-travel debugging gives you programming superpowers. Capture a machine-level recording of the execution of a process, load the recording into your IDE to replay and rewind the tape, stepping or running backwards and forwards. Go to any line of code that executed, and see any piece of program state. The most difficult bugs - including race conditions, logic errors, and intermittent exceptions - can be tracked back to their root cause with ease. Perfect for fixing intermittent/non-repeatable test failures in CI ("flaky tests") or hard-to-reproduce failures in production, or collaborating with colleagues remotely and asynchronously. Fix in minutes what would have taken hours, or in hours what would have taken weeks or months.
Online 09.03.2021
Drei Patterns für skalierbare Microservices
SPEAKER: Thorben Janssen COMPANY: freischaffender Consultant
KEYWORDS: Architecture, Concept, Technology
Wenn Sie skalierbare und unabhängige Microservices implementieren, wird der Datenaustausch zwischen diesen schnell zu einer Herausforderung. Sie müssen die Konsistenz sicherstellen, aber verteilte Transaktionen erzeugen eine enge Kopplung und sind keine Option mehr. Das Gleiche gilt für synchrone Service-Aufrufe.
Online 02.03.2021
Unlock Refactoring and Level Up Your Game
SPEAKER: Victor Rentea COMPANY: Homepage
To survive in a codebase we have to refactor continuously, we know that since the Extreme Programming days. But what stops us from doing so? In this talk, Victor summarizes what he learned discussing Clean Code and Refactoring with hundreds of teams from many countries. You'll find ideas to tackle a surprisingly broad spectrum of factors: technical, cultural, psychological, emotional, social, and even political. Using these you might unlock the freedom to refactor for you or your colleagues.
Online 25.02.2021
(Remote) Mob Programming
Building Teams and Keeping Teams Together
SPEAKER: Thomas Much COMPANY: muchsoft
KEYWORDS: Agile, Methods
Mob Programming is a way of truly collaborating for whole teams. But - why should we care? We are a team already, aren't we? Well... Our aim with software development is to deliver the most important feature quickly and in good quality to our customers. Reality looks different, though: Individual workload is maximized, the developers work on too many tasks at the same time. Half-baked features annoy our customers. Developers are fixing bugs around the clock, there's just no time for feature development.
Online 16.02.2021
jQAssistant - Double Feature
SPEAKER 1: Dirk Mahler COMPANY: Buschmais GbR
SPEAKER 2: Stephan Pirnbaum COMPANY: Buschmais GbR
KEYWORDS: Architecture, Open Source, Technology, Tools
Bereits im Oktober hatten wir mit Thomas Much und seinem Vortrag zu ArchUnit ein Vertreter für Tools aus der Ecke Validierung von Softwarestrukturen. Es kam öfters die Frage auf, wie sich ArchUnit mit jQAssistant vergleichen lässt. Aus diesem Grund sind wir sehr erfreut, dass wir mit Dirk Mahler und Stephan Pirnbaum zwei Vertreter aus dem jQAssistant-Umfeld für einen Talk verpflichten konnten um diese Fragen zu klären.
Online 01.02.2021
Kubernetes Operators? in Java?
Hold my mouse and look
SPEAKER: Jonathan Vila COMPANY: RedHat
KEYWORDS: Concept, Technology, Services, Tools
Do you want YOUR app easily deployable in Kubernetes or Openshift ? Do you want to control how it scale, deploy and update in an automated way ? Do you want to have your app in a cloud market ? » Then Kubernetes Operators are for YOU.
Online 26.01.2021
TDD: seriously, try it!
SPEAKER: Nacho Cougil COMPANY: Dynatrace
KEYWORDS: Concept, Hands-On, Lessons learned, Methods
Have you heard of TDD? Are you interested or familiar with this practice but have never been able to understand it?
Online 21.01.2021
A Change-Data-Capture Use-Case: Designing an Evergreen Cache
SPEAKER: Nicolas Frankel COMPANY: Hazelcast
KEYWORDS: Architecture, Open Source, Technology, Tools
When one’s app is challenged with poor performances, it’s easy to set up a cache in front of one’s SQL database. It doesn’t fix the root cause (e.g. bad schema design, bad SQL query, etc.) but it gets the job done. If the app is the only component that writes to the underlying database, it’s a no-brainer to update the cache accordingly, so the cache is always up-to-date with the data in the database.
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About
JUG Switzerland aims at promoting the application of Java technology in Switzerland.
JUG Switzerland facilitates the sharing of experience and information among its members. This is accomplished through workshops, seminars and conferences. JUG Switzerland supports and encourages the cooperation between commercial organizations and research institutions.
JUG Switzerland is funded through membership fees.
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