Strategic Domain-Driven Design in PHP by Example: How to Get Organized and Get Started
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Strategic Domain-Driven Design in PHP by Example: How to Get Organized and Get Started

About the Book

Strategic Domain-Driven Design is about communication and collaboration. But once you have strategized, communicated, and collaborated, where do you put the code you write? That’s where this book fits.

I’m taking a “code first” approach and here’s why. There’s been a strong tendency for developers to jump straight to the “tactical” patterns of Domain-Driven Design because they’re concrete and relatively straightforward to implement. The abstract concepts such as “Bounded Context” are much less obvious.

Strategic Domain-Driven Design tells us that our code should fit inside one or more Bounded Contexts. But what is a Bounded Context, and where should we draw the boundary?

The answer is, “it depends on the situation”, which is not terribly helpful when we need to actually start implementing a feature. The problem, literally, is in figuring out where to start.

Here is where to start.

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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.

Ed Barnard

Episode 220

Table of Contents

  •  
    • Is This the Book for You?
      • Mind Maps
      • Code First
      • Three-Part Strategy
      • Carry On
  • Part I: Parallel Strategies
    • Chapter 1. Understand the Problem
      • Essential Questions
      • Get Organized and Get Started
      • Gate Keeping
      • The MVC Pattern
      • Victims of Our Own Success
      • Essential Questions Answered
      • Summary
    • Chapter 2. Get Organized and Get Started
      • Essential Questions
      • Legacy Code Base
      • Secret Feature
      • Parallel Development Paths
      • Project Repository
      • IDE Helper
      • Generate Models
      • Model Access as Trait
      • Legacy Setup
      • Essential Questions Answered
      • Summary
    • Chapter 3. Random and Rare Failures
      • Essential Questions
      • Random and Rare Failure
      • Pollyanna Path
      • History Trace or Event Trace
      • Experimentation
      • Domain Events
      • Overkill
      • Domain Event Tables
      • Exception Report
      • Event Counts
      • Essential Questions Answered
      • Summary
    • Chapter 4. Structure by Use Case
      • Essential Questions
      • Command-Line Tool
      • Legacy Command-Line Tool
      • Bounded Context Pattern
      • Command Line
      • Factory
      • Repository
      • Application Service
      • Legacy Count Events
      • Essential Questions Answered
      • Summary
    • Chapter 5. Exploring Boundaries
      • Essential questions
      • New Bounded Context
      • Independent Evolution
      • The Dependency Inversion Principle
      • Test Boundary
      • Essential Questions Answered
      • Summary
    • Chapter 6. Domain Event Walkthrough
      • Essential Questions
      • Domain Event Command
      • Domain Event Factory
      • Domain Event Repository
      • Domain Event Service
      • Domain Event Interface
      • Legacy Domain Event Walkthrough
      • Essential Questions Answered
      • Summary
    • Chapter 7. Application Event Walkthrough
      • Essential Questions
      • Application Event Command
      • Application Event Factory
      • Default Application Event Repository
      • Default Application Event
      • Base Application Event
      • Notify
      • Originating Event Context
      • Application Event Interface
      • Legacy Application Event Walkthrough
      • Essential Questions Answered
      • Summary
    • Chapter 8. Transactional Boundary
      • Essential Questions
      • The Right Expertise
      • Protective Boundaries
      • The Crucial Concept
      • Transactional Versus Eventual Consistency
      • Manual Transaction
      • What is an Aggregate?
      • Essential Questions Answered
      • Summary
    • Chapter 9. Exception Report
      • Essential Questions
      • Designing for Failure
      • Test Harness
      • The New Pattern
      • The New Feature
      • Record Exception
      • Disable Application Event
      • Legacy Exception Report
      • Changed Habits
      • Essential Questions Answered
      • Summary
  • Part II: Advantageous Boundaries
    • Chapter 10. System Under Test
    • Chapter 11. Orchestrating Aggregates
  • Part III: Tactics and Topics
    • Chapter 12. Registration Workflow
    • Chapter 13. A Pattern Emerges
    • Chapter 14. Tests to the Rescue
    • Chapter 15. Preparatory Refactoring
    • Chapter 16. Abstract Cement, Concrete Path
    • Revision History

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