Category: 2.6 Architecture and Design
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Microservices vs. inner source
I just listened to Eberhard Wolff’s BED-Con talk on microservice-based system architectures, which he prefers to call Independent Systems Architectures (ISA). One purpose of calling it ISA is to emphasize that there should be no common data model and no shared reusable libraries between microservices. Obviously, by discounting reuse, ISA may increase development speed short-term…
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The design space for object creation
While preparing a session on (object-oriented) object creation for my Advanced Design and Programming course, I noticed that there are at least two major ways of looking at how to decide on how to create an object. The traditional way is a (still unwritten) pattern language that utilizes the classic Gang-of-Four object creational patterns (and…
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Which design patterns should be retired? (In defense of singleton)
Addison-Wesley asked the patterns community (or at least those who were there at the beginning) about their opinion on various issues. This is the second post of what should have been three (though I probably will only get to the first two). For this very specific question, I expect everyone to say: Retire Singleton! I…
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First thoughts on the 20 year anniversary of the design patterns book (a.k.a. GoF book)
Addison Wesley is going to celebrate the 20 year anniversary of the Design Patterns a.k.a. Gang-of-Four book. For this, they reached out to the community and asked for contributions. Here are the questions they asked, suggesting we ask (and answer) our own ones as well: I’ll provide my answers to questions 1-4 here and I’ll…
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Software architecture is a (poor) metaphor
At FAU, we are now holding our so-named “software architecture” seminar for the second time. It is important to realize (for students as well as the general public) that “software architecture” is a metaphor (or, maybe more precisely, an analogy). Architecture is a discipline several thousand years old, while software architecture is only as old…
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Dating Design Patterns Skit Script
While cleaning up, I found this copy of the OOPSLA 2004 Dating Design Patterns skit script. The skit itself was, as Brian Foote called it, occasionally humorous. I’m providing it here (before throwing out the paper copy) for the intermittent professional entertainment on my blog. We performed the skit at OOPSLA 2004. Fortunately, I don’t…