I just figured out why callback style APIs are harder to test (and harder to deal with in general). It’s because they break one of the essential ingredients of a hexagonal architecture: the middle hexagon should be independent of the adapters. Here’s why… In order to use a callback API, one or more of our… [Read more…]
January 22, 2009
Warning: academic theorizing and hypothesizing follow. Oh, and half-baked pontification. I just finished refactoring reek to drive in a major new chunk of functionality (configuration files) which I’ll release soon, when I’ve had time for some thorough testing. The refactoring needed to accommodate the change was huge, occupying much of my free time over the… [Read more…]
October 29, 2007
Dave Verwer at NWRUG has been crazykind enough to invite me to re-run a version of my hexagonal architecture workshop this month at the MDDA. This is the session that, two years ago, had seventy of the world’s leading agilists standing on one leg. If you’re in Manchester on the evening of November 20th, why… [Read more…]
February 27, 2006
Is there really anything to debate about Data Classes? And can hexagonal architecture clarify the situation?
November 28, 2005
In which I explore the impact of metaphor on system architecture
November 21, 2005
I spent an enjoyable day last week at XPdays Benelux in Rotterdam. I ran a couple of sessions, attended a couple more, and met up with friends old and new
October 31, 2005
In which Brian Marick recommends designing your own API to the filesystem
September 21, 2005
My Jidoka and Hexagonal Architecture sessions have been accepted for XPday Benelux 2005 in Rotterdam this November
July 25, 2005
Last month Alistair began using a new name for the Hexagonal Architecture pattern
June 14, 2005
Never throw an exception. And if someone throws one at you, catch it immediately and don't pass it on
I'm Kevin Rutherford, from Macclesfield in the UK. I'm an independent agile software coach and mentor, specialising in test-driven development, agile, lean and the theory of constraints.
March 16, 2009
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