Wednesday, October 21, 2020

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 Cohesion and Coupling Sometimes what appears to be very simple and clear, is not that clear at all. A prominent example is the difference b...
Friday, January 18, 2019

IoTDeepDive

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IoTDeepDive - Infos zum OOP 2019 Ganztagstutorium Fr4 Diese Webseite ist auch erreichbar über folgende URL:  https://tinyurl.com/oop2019-i...
2 comments:
Sunday, August 16, 2015

What the hell is Software Architecture

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Since the Nineties many definitions of software architecture have been proposed, most of them being very vague. Eventually, the common denom...
4 comments:
Wednesday, May 13, 2015

A Matter of Waste

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If a queue has a capacity of 100 units, we may enqueue 10 entities with a volume of 10 units per entity. 10 times 10 equals 100, right? If w...
1 comment:
Thursday, March 05, 2015

Technical Debt - The Downside of Metaphors

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The term "debt" is a metaphor from economy. Its use for software development seems to be very reasonable. Whenever developers fail...
4 comments:
Saturday, February 28, 2015

Are Patterns like Mummies?

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In 1994, the Gang of Four, Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides published their groundbreaking book on design patterns. ...
1 comment:
Tuesday, February 24, 2015

Architecture-as-a-Service

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Recently, I discussed architecture design with some colleagues who are involved in Product Line Engineering projects. When the term "Re...
Sunday, February 01, 2015

I am back

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After a long time absence due to health issues I am finally back. I will add new content in the following months with the publication freque...
1 comment:
Monday, July 14, 2014

Micro Management for Micro Brains - why Micro Services suck

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It sounds like a great idea. Instead of building a monolithic enterprise application, just split functionality into small components and run...
Sunday, July 22, 2012

Reviewing systems - the sum is more than its parts

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The profession of a software or system architect is not only about creating new systems, it is also about assessing and improving existing s...
6 comments:
Saturday, January 07, 2012

Trapped

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DSLs are currently being promoted by a large number of activists. If you ever read the seminal Pragmatic Programmers book, you'll also f...
5 comments:
Wednesday, October 12, 2011

Architecture Governance

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In a large project a product line is developed that supports multiple smart phones. The platform development team puts all code in its super...
5 comments:
Thursday, October 06, 2011

Steve Jobs, 1955 - 2011

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Born in 63, I had the great opportunity to grow up with personal computers. Even around the Eighties Woz and Steve Jobs were already legends...
1 comment:
Tuesday, September 20, 2011

Using War Stories

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For the education of software architects we are using war stories to emphasize important learnings. The whole curriculum is based on the man...
Friday, September 16, 2011

Fractal Design

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If you are going to design a system, you basically need to identify prioritized main use cases and quality attribute scenarios among other f...
2 comments:
Thursday, September 08, 2011

The Telephone Test for Software Architecture

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We all know that a software architecture should reveal two properties among many others for an adequate internal quality: Simplicity implies...
5 comments:
Wednesday, September 07, 2011

Apples and Oranges

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How often do we hear statements like how immature software engineering is compared to other engineering disciplines? Of course, construction...
1 comment:
Sunday, September 04, 2011

Emergence

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As explained in my last posting, emergence is a powerful approach for solving some hard problems in a non-deterministic way. It's a kind...
1 comment:
Wednesday, August 31, 2011

The Whole is more than the Sum of its Parts – Creating Complex Systems from Simple Entities

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The Internet represents an ubiquitous infrastructure that enables complex systems such as clouds, SOA-based systems, e-mail, or Web 2.0 appl...
1 comment:
Thursday, August 25, 2011

Make it explicit

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In development projects one of the main challenges comprises clarifying the requirements and assumptions. Knowledge about the problem (and s...