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Architectural Simplicity through Events
Russ Miles
Simplicity itself
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Architectural Simplicity through Events Russ Miles Simplicity - - PowerPoint PPT Presentation
Architectural Simplicity through Events Russ Miles Simplicity - - PowerPoint PPT Presentation
Architectural Simplicity through Events Russ Miles Simplicity itself or Approaches to Dieting for Elephants in Software Architectural? Decisions Scope Awareness Build the Right Thing, Right A Story... The Elephant in the
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“Approaches to Dieting for Elephants in Software”
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“Architectural?”
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Decisions
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Scope
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Awareness
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Build the Right Thing, Right
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A Story...
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“The Elephant in the Standup”
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Axioms
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Your software's first role is to be useful
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The best software is that which is not needed at all
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Human comprehension is King
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Mechanical Sympathy is Queen
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Software is a process of R & D
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Software Development is an extremely challenging Intellectual Pursuit
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Simplicity?!
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Building Adaptable Software
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Why don’t we build Simple Solutions?
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Simplicity in Architecture?
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“The Allegory of the Relationship- Shy Component”
A true story
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Freedom to express myself
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To not be too tied down
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Freedom to Move
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Commitment
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moveable, removable, substitutable, combinable, extendable”....
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...clear, comprehensible, understandable.
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Principles
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O.R.E.
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Organise => Reduce => Encapsulate
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Step 1: Organise
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Where should I be?
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Hexagonal Architecture?
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TBD Picture of Alistair Cockburn Back to 2005...
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The Problems of ‘Layering’
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The Problems of ‘Coupling’
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Entanglement
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Your Application is an Island
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Ports
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Adapters
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Evolution
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Fast Forward to 2012 2012...
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Life Preserver
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Perspective? Tool? Approach?
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YES
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Organise and Visualise
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Implementation of Hexagonal
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Am I ‘Core’?
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Am I ‘Integration’? and if so, which one?
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Who are my peer group?
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Step 1: Organise ☑
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Step 2: Reduce
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Reduce Entanglement
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Reduce Concerns
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(Almost) Be a Function
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Extract Side-Effects
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Reduce Coupling
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Language?
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Method Name?
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Parameters?
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Events
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Immutable Events
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Temporal?
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Type?
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Immutable Events
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Immutable Data
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"Be liberal in what you accept, and conservative in what you send."
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Intra-Domain Duplication
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Inter-Domain Duplication
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moveable, removable, substitutable, combinable, extendable”....
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...clear, comprehensible, understandable.
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Easier to ‘strangle’?
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moveable, removable, substitutable, combinable, extendable”....
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Summary
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Simplicity helps us beat the Elephant(s) in the Standup
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O.R.E.
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Organise => Reduce => Encapsulate
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Life Preserver to Organise
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moveable, removable, substitutable, combinable, extendable”....
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...clear, comprehensible, understandable.
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Events De-Couple
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Adaptable Software Wins
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Thank-you
Simplicity itself
russell.miles@simplicityitself.com @russmiles