KISS me quickly: The battle against complexity
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© Equal Experts UK Ltd 2016 simple software solutions to big business problems. Making Software. Better. KISS me quick The Battle against complexity
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Transcript of KISS me quickly: The battle against complexity
© Equal Experts UK Ltd 2016simple software solutions to big business problems.
Making Software. Better.
KISS me quickThe Battle against complexity
© Equal Experts UK Ltd 2016
@kings13y
Intro
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Who & What
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KISS ?
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What is it ?
Is it used ?
● Occam's razor, ● "Simplicity is the ultimate sophistication" - da Vinci● "Less is more" - Van Der Rohe's● "Perfection is ….when there is nothing left to take away" de Saint Exupéry's
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Complexity[T]
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define: complexity
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Cynefin
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Obvious: known knowns
Complicated: known unknowns
Complex: unknown knowns
Chaotic: unknowable unknowns
Disorder: unknown domain allocation
ORDERED UNORDERED
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Systems Thinking
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● Analytic vs Systemic (e.g. Arch)
○ Break / Eval / Aggregate
○ Context / Eval Whole /
Encompass
● Interactions
● Details complexity
● Dynamic complexity
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Promise[Theory]
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● Obligation and Promises
● Agent Autonomy
● CFEngine
● Logic (directed) graph of
complex network relationships
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Measuring Complexity
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Micro (code)….
● Coverage● Coupling and cohesion● Halstead measures● Duplication
Macro (project)….● Tech
○ No of tech○ Team maturity○ Touchpoints
● Business○ Size○ Requirements maturity○ Constraints (Time, Money…)
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Manifesto
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Individuals and interactions over processes and tools
Working software over comprehensive documentation
Customer collaboration over contract negotiation
Responding to change over following a plan
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So What?
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What difference does it make ?
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■ (Planned) Obsolescence
■ Future systems
■ Cognitive Load
■ ...what are you building ?
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Goals and Strategies
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Abstractions for simplification
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● Simplify and use abstractions
● Keep things DRY
● UX design all-the-things
● Service Orientation..
● Just enough
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Design / Governance / (Pragmatic) Dictatorship
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■ More than just UI/UX/UR
■ Federated governance
■ Pizza Dog food teams
■ Who will decide and what will be left of them…(sic)
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Language[-MonoParadigm]
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■ Multi paradigm languages can provide flexibility… BUT!!!
○ Need Idioms
○ Be explicit about magic
○ Validity of private languages ?
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People and delivery
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■ Deliver often and assess
■ Reduce batch size
■ Full stack => full cycle : devops => desops
■ Recruit to the letter [T, N, M]
■ Diversify
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Isolation
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■ Local domains (internal vs external ; type aliases)
■ Micro all-the-things (beware the ‘fra-me-lith!’)
■ Reduce size, reduce coupling
■ Enable self service culture
■ Consumer contracts*
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Fin
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■ Pragmatic in all the things
■ Systemic thinking to hiring, design and delivery
■ Keep it Simple, Small
■ Be Nice
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Links & Questions..
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● https://eight2late.wordpress.com/2008/05/01/a-short-note-on-project-complexity/
● https://en.wikipedia.org/wiki/Cynefin_Framework
● https://en.wikipedia.org/wiki/Halstead_complexity_measures
● https://en.wikipedia.org/wiki/Function_point
● https://en.wikipedia.org/wiki/Cyclomatic_complexity
● https://www.amazon.co.uk/dp/B005AFNPNO/
● https://www.amazon.co.uk/Thinking-Promises-Mark-Burgess-ebook/dp/B01092PYG8/ref=sr_1_7
● https://eight2late.wordpress.com/2008/05/01/a-short-note-on-project-complexity/
● https://www.amazon.co.uk/dp/B00XJYVF44/● https://en.wikipedia.org/wiki/Rube_Goldber
g_machine● https://en.wikipedia.org/wiki/KISS_principle● https://en.wikipedia.org/wiki/Cognitive_loa
d● https://en.wikipedia.org/wiki/Promise_theor
y● https://drive.google.com/file/d/0B59Tysg-n
EQZOGhsU0U5QXo0Sjg/view
© Equal Experts UK Ltd 2016simple software solutions to big business problems.
Making Software. Better.
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