Strategic Domain-Driven Design in CakePHP
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Strategic Domain-Driven Design in CakePHP

Slide Deck and Narrative for CakeFest 2022

About the Book

I joined the USA Clay Target League’s software team with the intent of becoming transformational within a year. It took three. In the PHP world, three years is far too long! Our software had “hit the wall” and needed a rewrite–or something. We weren’t sure what. We had a patchwork of spreadsheets and PHP scripts that grew along with us. We considered Domain-Driven Design, DDD.

DDD is scary because of the difficult learning curve. It’s not that we are scared to learn; it’s that we rarely have time to learn. Few PHP teams can afford to take on a multi-month or even multi-year experiment.

I learned that Strategic DDD is about communication and collaboration. That’s great, but once you have strategized, communicated, and collaborated, where do you put the code you write? This talk provides you that precise starting point. You’ll be able to immediately begin gaining your own hands- on Strategic DDD experience in your own project.

This talk is aimed at intermediate PHP, senior, and master software developers who’ve had some exposure to DDD but not necessarily any hands-on experience (that’s why we’re here).

This talk was presented at CakeFest, the CakePHP conference, September 29-30, 2022.

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    • PHP
    • Software Architecture
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About the Author

Ed Barnard
Ed Barnard

Edward Barnard has experienced two consecutive 20-year careers in software development. He soldered together his first computer from a handful of resistors, diodes, switches, and lights in 1968 at age 10. He taught himself FORTRAN IV two years later. High school brought BASIC. College introduced ALGOL, assembly language, and Pascal.

His first career was operating system development amongst the wizards of Cray Research. Ed's second 20-year career has been web software development for countless clients, companies, and projects. He enjoys sharing what he's learned along the way through magazine articles, books, and speaking at conferences. He and wife Susan get outdoors when they can to camp the Minnesota winter with no mosquitoes.

Table of Contents

  • About Edward Barnard
  • CakeFest Abstract
    • Cover Slide
    • The Plan
  • Approaching Software Crisis
    • The USA Clay Target League
  • What’s In It For You?
    • Marketable Skill
  • Bounded Context Pattern
    • How to Implement
    • Fine- or Coarse-Grained?
    • Folder Structure
    • Relation to CakePHP
  • Tactical Patterns
    • Factory Usage
    • Factory Listing
    • Repository Listing
    • Ease Testing
    • Application Service Listing
  • Protective Boundaries
    • Boundary Crossing
  • Bonus Round
    • Differently-Protective Boundary
    • The Crucial Concept
    • Avoid Both Extremes
    • Carefully Model Invariants
    • Aggregate’s Power
    • Knowledge Crunching
  • Double Feature
  • Summary
    • Thank You
  • Notes

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