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Should we practice "system test driven development?"

Maybe not! ATDD and similar things are already here!

Ken McCormack

Software Architecture as Code

April 11, 2018

Caught a v neat article on InfoQ by Stefan Friese on architecturally aligned testing... it's useful read.

I reproduce my comment, below, before I forget a few simple ideas...


Stefan, a great article!

Also check out Caitie MaCaffrey's talks / paper on distributed systems verification . . .

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Rechtin on Ultraquality - The Challenge

Excellence Beyond Measure and the need for Ultraquality Systems

Ken McCormack

Software Architecture as Code

February 04, 2018

Continuing the complex systems architecture theme and discussion of ultra-quality systems, the excerpt below is taken from Eberhardt Rechtin, Systems Architecting, Creating and Building Complex Systems, 1991, Chap 8.

Several issues spring to mind today, particularly how the need for some ultra-quality systems continues to be driven . . .

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Rechtin on Ultraquality - Redundancy and Fault Tolerance

The Writings of a Complex Systems Architecture Legend

Ken McCormack

Software Architecture as Code

February 04, 2018

In his classic (but criminally overlooked) 1991 book "Systems Architecting, Creating and Building Complex Systems," Eberhardt Rechtin discusses technical, managerial and architectural responses to the challenge of building high quality systems. Despite being several decades old, 'modern' techniques like Lean manufacturing . . .

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Architecting Continuously Testable Systems

Testability Quality Factor for Continuous Delivery in Digital Systems

Ken McCormack

Software Architecture as Code

April 06, 2015

TL;DR; When we architect systems using automated testing and test-first approaches, we quickly see testability constraints move to our system boundary. Low testability quality factor in external services is a key constraint on our ability to continuously prove our system is in a state of production readiness. We require external systems . . .

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Legacy Architecture and Testability

Manual Test Teams and Testability Architectural Debt

Ken McCormack

Software Architecture as Code

April 05, 2015

The architecture of specification subsystems has always been critical to quality factors like cycle time -

Industry estimates indicate that between 30 and 50 percent (or in some cases, even more) of the cost of developing well-engineered systems is taken up by testing. If the software architect can reduce this cost, the payoff . . .

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Quality Factors for SOA

Service-Oriented Architecture and Architectural Quality Factors

Ken McCormack

Software Architecture as Code

April 04, 2015

In the context of Service-Oriented Architecture, early work from [O'Brien et al, 2005] discusses the importance of quality attributes -

Software architecture is the bridge between mission/business goals and a software-intensive system. Quality attribute requirements drive software architecture design. Choosing and designing . . .

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Architectural Quality Factors

Software Architecture in Practice

Ken McCormack

Software Architecture as Code

April 04, 2015

Recap on extrinsic quality factors

Extrinsic quality factors are key concepts for business and architecture stakeholders. [Bass et al, 2013] use quality factors to describe the architectural characteristics of a system -

availability, modifiability, performance, security, testability, and usability

as . . .

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