Learn

Event Modeling and .em.hcl

Choose a path based on what you already know.

New to Event Modeling?

Start with the vocabulary and the four recurring workflow shapes.

Elements→ Patterns→ Scenarios→ Language→ Quality

Already know Event Modeling?

Start with how the concepts map to HCL.

Language→ Scenarios→ Reference

A useful map of the cheat sheet

5 elements · 4 patterns · 6 workshop stages · 4 smells

5Elements

Event, Command, Read Model, Screen, Processor.

 4Patterns

State Change, State View, Automation, Translation.
6Workshop stages

From Events to scenarios.

4Smells

Bed, left chair, right chair, shelf.

The pages

01

Elements

The five things shown on an Event Model.

Open → 02

Patterns

Four shapes for organizing a workflow.

Open → 03

Scenarios

Pattern-specific Given, When, and Then rules.

Open → 04

Language

Blocks, references, fields, and canonical flow.

Open → 05

Quality

Errors, warnings, and four modeling smells.

Open → More

Full learning guide

Exercises, facilitation notes, and a capstone.

Open on GitHub →