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The World's Shortest and Most Chaotic Introduct...

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Avatar for Mathias Verraes Mathias Verraes
April 14, 2016
Technology
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The World's Shortest and Most Chaotic Introduction to Event Storming

CukeUp London April 2016
http://verraes.net

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Mathias Verraes

April 14, 2016
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Transcript

  1. The World's Shortest and Most Chaotic Introduction to Event Storming

    @mathiasverraes @jbpros

  2. Mathias Verraes Independent Consultant @mathiasverraes verraes.net

  3. Julien Biezemans Co-founder at Cucumber @jbpros

  4. None

  5. The Grand Dichotomy of Systems1 Things vs Processes 1 "Rethinking

    System Analysis and Design" — Gerald M. Weinberg

  6. Event Storming: visually modelling behaviour over time

  7. Today: Big Picture Event Storming Exploration — Ubiquitous Language —

    Processes

  8. Going further: Design Level Event Storming Precision — Constraints —

    Processes Dependencies — Messaging — Event Sourcing Bounded Contexts — Concurrency — Race Conditions — ...
  9. None

  10. Domain Event Something has happened in the past that is

    relevant to the business Past tense: Trip has Started

  11. Command An instruction that a user (or another system) sends

    to your system Imperative: Start Trip

  12. Business Rule A constraint that determines the outcome (Events) of

    a particular Command

  13. Given there is a user vs Given a user has

    registered Given Event And Event When Command Then Event

  14. @mathiasverraes verraes.net