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

CukeUp London April 2016
http://verraes.net

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
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 — ...
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