Oliver Wehrens

The Pivotal Role of Tech Leadership in Overseeing the Big Picture

The Pivotal Role of Tech Leadership in Overseeing the Big Picture What does it mean to take care of the Big Picture? What are your responsibilities?

Aug 28, 2024 • article • 2 min read

Reporting on a big waterscrum project

Reporting on a big waterscrum project Learn how I managed to report a 100 agile developer company into a big corporate strategic project, how we measured progress and met the deadline.

Jun 13, 2024 • article • 5 min read

Fuckup: Goodhart's Law in practice - tie a metric to a bonus

Fuckup: Goodhart's Law in practice - tie a metric to a bonus We had good intentions of increasing the quality of the code base. Well ...

Apr 18, 2024 • article • 2 min read

Fuckup: Programming Languages and Organizations

Fuckup: Programming Languages and Organizations How not to deal with programming languages introduced by developers.

Apr 17, 2024 • article • 3 min read

Clean code ... should you DRY?

Clean code ... should you DRY? Don't repeat yourself. This is a core principle of programming. Right? Or? Why not?

Mar 19, 2024 • article • 2 min read

Why you need a macro architecture

Why you need a macro architecture What is a macro architecture and what is important?

Mar 17, 2024 • article • 3 min read

Can AI replace me as a consultant?

Can AI replace me as a consultant? Can an AI replace my job? What would it take?

Dec 24, 2023 • article • 3 min read

Whisper: Nvidia RTX 4090 vs M1Pro with MLX (updated with M2/M3)

Whisper: Nvidia RTX 4090 vs M1Pro with MLX (updated with M2/M3) How fast is my Whisper Benchmark with the MLX Framework from Apple? Nvidia 4090 / M1 Pro / M2 Ultra / M3

Dec 9, 2023 • article • 5 min read

Artifacts for effective alignment

Artifacts for effective alignment Which artifacts are at least needed for an effective alignment in your organization?

Oct 31, 2023 • article • 6 min read

Podcast time

Podcast time Ivan of dev.env Podcast invite me to talk about my way in the IT industry.

Apr 13, 2023 • interview • 1 min read

OpenAI Whisper Performance on Nvidia RTX 4090

OpenAI Whisper Performance on Nvidia RTX 4090 How fast is OpenAI whisper on a RTX 4090?

Mar 21, 2023 • article • 1 min read

Semantic Search with Cosine Similarity

Semantic Search with Cosine Similarity Search through text with semantic search using machine learning.

Feb 23, 2023 • article • 3 min read

OpenAI Whisper Benchmark Nvidia Tesla T4 / A100

OpenAI Whisper Benchmark Nvidia Tesla T4 / A100 I ran a benchmark on an Nvidia Tesla T4 / A100 to see how well OpenAI Whisper performs.

Dec 22, 2022 • article • 3 min read

OpenAI Whisper on Apple M1

OpenAI Whisper on Apple M1 How good runs the C++ implementation of OpenAIs Whisper on Apple Silicon?

Dec 8, 2022 • article • 4 min read

What does it take to become a software architect?

What does it take to become a software architect? I got together with Eberhard Wolff to discuss and answer questions about what it takes to become a Software Architekt on Software Architektur TV.

Jul 21, 2021 • interview • 6 min read

How hands-on should a CTO be?

How hands-on should a CTO be? Should a CTO code?

Mar 12, 2021 • article • 2 min read

Sketch Book Summary: No Estimates

Sketch Book Summary: No Estimates Sketch Book Summary: No Estimates

Dec 30, 2020 • article • 1 min read

Four weeks of home office

Four weeks of home office On March 12th we decided to send everybody into Home office. We were partially already working remotely but we never tried to be 100%. Now we were forced to.

Apr 17, 2020 • article • 4 min read

Sketch Book Summary: Good Strategy, Bad Strategy

Sketch Book Summary: Good Strategy, Bad Strategy A sketch on the book to remember.

Jan 15, 2020 • article • 1 min read

2019

2019 Lots of things have changed for me in 2019. So let’s look back.

Jan 1, 2020 • article • 2 min read

Technical Agility

Technical Agility What, why, where & how to react to changes

Sep 21, 2019 • article • 16 min read

Wardley Mapping Canvas

Wardley Mapping Canvas A simple Canvas for creating Wardley Maps.

Sep 4, 2019 • article • 1 min read

Using Sketch Book Summary (SBS) to remember content what matters to me.

Using Sketch Book Summary (SBS) to remember content what matters to me. Drawing important things from books keeps my memory fresh.

Aug 23, 2019 • article • 2 min read

Sketch Book Summary: Atomic Habits

Sketch Book Summary: Atomic Habits A summary sketch about the book 'Atomic Habbits'.

Aug 6, 2019 • article • 1 min read

CD und DevOps im Expertencheck

CD und DevOps im Expertencheck Grau ist alle Theorie. Wir haben daher verschiedene Experten zum Thema Continuous Delivery und DevOps befragt – wir wollten wissen, wie ihre Erfahrungen mit den eigenen Teams und Unternehmen verlaufen sind. Oft stellte sich heraus, dass die Technik an sich nicht das größte Problem ist.'.

Jun 1, 2017 • print • 1 min read

Warum wir auf DevOps setzen

Warum wir auf DevOps setzen Die Konkurrenz ist groß, jeder will beim Ausliefern der Software der schnellste sein. Warum wir dabei auf DevOps setzen? Das sind die Argumente.

Jun 1, 2017 • print • 1 min read

2017-90 - Random Tech Links

Mar 31, 2017 • article • 1 min read

Service Discovery For Machines And Humans

Feb 1, 2017 • article • 1 min read

Microservices bei der E-POST

Microservices bei der E-POST Microservices sind in aller Munde, und auf Konferenzen versprechen Migrationsszenarien und technische Details gut besuchte Vorträge. Eine Folie, die fast immer auftaucht, ist eine Feststellung von Melvin Conway aus dem Jahr 1968, die besagt, dass „Organisationen, die Systeme entwerfen, […] auf Entwürfe festgelegt sind, welche die Kommunikationsstrukturen dieser Organisationen abbilden.“ (Conways Law). Das heißt konkret, dass sich die Organisation der Firma und der Teams direkt auf den Code und die Architektur auswirkt.

Jan 1, 2017 • print • 1 min read

Der Real-Life-Check

Der Real-Life-Check Über Microservices wird momentan viel in Theorie geschrieben und gesprochen. Doch wie sieht es in der wahren Welt dort draußen aus? Wir haben die Autoren dieses Themenschwerpunkts und weitere Experten aus der Branche gefragt, wie ihre Microservices-Erfahrungen aus der Praxis sind.

May 1, 2016 • print • 1 min read

How is your microservice architecture doing?

Jan 15, 2016 • article • 10 min read

Entwicklung verteilter Systeme - Herausforderungen nicht nur an die Architektur

Sep 29, 2015 • talk • 2 min read

Wider den Monolith - Am Ende wird alles gut

Nov 6, 2014 • talk • 1 min read

Migrating a monolith

Oct 9, 2014 • article • 5 min read

If you don't fight it you end up with a monolith

Oct 7, 2014 • article • 4 min read

A Monolith could be good for you

Oct 6, 2014 • article • 3 min read

How you might know that you have a monolith

Oct 3, 2014 • article • 2 min read

How failing tests can be green

Feb 13, 2014 • article • 2 min read

Getting Faster

Dec 18, 2013 • talk • 1 min read

Mit Puppet und RPM

Mit Puppet und RPM „It works on my machine“ hat sicher jeder schon einmal gehört. In der Entwicklung verhält sich die Software wie erwartet. Bis diese in der Produktion ist, dauert es lange. Einmal live, treten dann unerwartete Fehler auf, während die Softwareentwicklung längst an einer ganz anderen Stelle ist. Wie kann dieser Spagat umgangen werden? Dieser Artikel reflektiert, wie wir mit diesem Problem auf Basis einer paketorientierten Deployment Pipeline umgehen.

Jul 1, 2013 • print • 1 min read

Doing a Sprint Review with a Review Fair

Jun 23, 2013 • article • 2 min read

Using KVM and Virt-Manager via XQuartz on MacOSX (and solving the keymapping trouble)

Jun 3, 2013 • article • 1 min read

Getting started with veewee and vagrant

May 26, 2013 • article • 3 min read

From Development to Production

Apr 26, 2013 • talk • 1 min read

Do not use Javadoc

Jul 27, 2012 • article • 2 min read

Javascript testing for Java projects

Jul 12, 2012 • article • 3 min read

Realtime Push Events zum Browser

Realtime Push Events zum Browser WebSockets sind in aller Munde, im Java Magazin sind sie nun sogar Titelthema. Aber es geht auch einfacher: Wer Echtzeit-Events zum Browser schicken will, kann es sich leicht machen. Dieser Artikel zeigt, wie.

May 1, 2012 • print • 1 min read

Cucumber-jvm for Java

Apr 12, 2012 • article • 3 min read

One assert per test, really

Jun 14, 2011 • article • 2 min read

Spring 3 MVC, Ajax and jQuery Magic (or better: simplicity)

Jul 20, 2010 • article • 3 min read

Busy Programmers Guide on where to buy eBooks

Jun 5, 2010 • article • 3 min read

How to detect if your server is down when making jQuery Ajax calls

Apr 26, 2010 • article • 2 min read

Lightweight Web Prototyping for the Framework loving (Java) Developer

Apr 20, 2010 • article • 4 min read

How we switched from Subversion to Git

Mar 22, 2010 • article • 7 min read

5 code metrics you need to watch

Feb 23, 2010 • article • 3 min read

Name your objects right

Feb 9, 2010 • article • 2 min read

One year of blogging

Feb 6, 2010 • article • 2 min read

What's your preferred development infrastructure stack?

Jan 13, 2010 • article • 2 min read

Using Selenium2 for web testing (and not Selenium IDE)

Jan 4, 2010 • article • 6 min read

Story based daily stand-up meeting

Dec 25, 2009 • article • 2 min read

Integrate early, integrate often

Nov 28, 2009 • article • 3 min read

Concordion vs. Cucumber and Java based Acceptance Testing

Oct 13, 2009 • article • 5 min read

Test JBoss Rules 5 (or Drools) with TestNG

Sep 23, 2009 • article • 4 min read

How pair programming can help you to get into Test Driven Development

Sep 13, 2009 • article • 2 min read

4 ways to test your code

Aug 20, 2009 • article • 3 min read

How to get your developers to pay more attention to the burn down chart (and have fun)

Aug 5, 2009 • article • 1 min read

Two upgrades to cut down development time

Jul 24, 2009 • article • 3 min read

Getting started with JSF 2 (and Maven)

Jul 3, 2009 • article • 3 min read

Update on Quant TestTester

Jun 25, 2009 • article • 1 min read

Quant - Check your Tests

May 30, 2009 • article • 3 min read

Jetbrains released a Google App Engine plugin for IntelliJ

May 8, 2009 • article • 1 min read

IntelliJ Idea Plugin Property Sorter updated

May 5, 2009 • article • 1 min read

How to test Spring Webflow 2 (with parent flows)

Apr 20, 2009 • article • 2 min read

Getting the Browsers GeoLocation with HTML 5

Apr 11, 2009 • article • 3 min read

A Quick Look at Google App Engine for Java

Apr 8, 2009 • article • 4 min read

Coloring your IDE

Apr 6, 2009 • article • 2 min read

IE7 caches rendered elements?

Mar 30, 2009 • article • 2 min read

Using TestNG with DataProviders to cover more test cases

Mar 23, 2009 • article • 2 min read

How to refactor Spring Webflow variables in your JSF pages with IntelliJ IDEA

Mar 18, 2009 • article • 2 min read

Updated Scrum Board Cheat Sheet with Story Owner

Mar 12, 2009 • article • 1 min read

SOLID Development Principles In Motivational Pictures (enhanced)

Mar 8, 2009 • article • 1 min read

Why our current Sprint commitment will fail

Mar 5, 2009 • article • 3 min read

Three reasons why you don't want to use a Spring context in unit tests

Feb 25, 2009 • article • 5 min read

Sorting your properties files in IntelliJ Idea

Feb 23, 2009 • article • 1 min read

The ScrumBoard Cheat Sheet

Feb 19, 2009 • article • 3 min read

Extreme visibility in an agile environment

Feb 17, 2009 • article • 3 min read

My MacBook Pro loves 4 GB

Feb 15, 2009 • article • 1 min read

IntelliJ IDEA Rulezzz with code completion

Feb 14, 2009 • article • 1 min read

IntelliJ IDEA 8.1

Feb 11, 2009 • article • 1 min read

Behavior driven development with EasyB (and vs. TestNG)

Feb 10, 2009 • article • 3 min read

Starting again

Feb 7, 2009 • article • 0 min read

Hi, I'm Oliver Wehrens.

Publications