event-modeling

# Event Modeling Skill

## When to Use This Skill

Use this skill when:

- **Event Modeling tasks** - Working on adam dymitruk's event modeling methodology with swimlanes
- **Planning or design** - Need guidance on Event Modeling approaches
- **Best practices** - Want to follow established patterns and standards

## Overview

Create Event Models using Adam Dymitruk's visual methodology for designing event-driven systems.

## MANDATORY: Documentation-First Approach

Before creating Event Models:

1. **Invoke `docs-management` skill** for Event Modeling patterns
2. **Verify methodology** via MCP servers (perplexity, eventmodeling.org)
3. **Base guidance on Adam Dymitruk's original methodology**

## Event Modeling Fundamentals

```text
Event Modeling Structure:

TIME FLOWS LEFT TO RIGHT ───────────────────────────────────────────►

┌─────────────────────────────────────────────────────────────────────┐
│ BLUE: UI / Commands / External Triggers                            │
│ ┌──────────┐  ┌──────────┐  ┌──────────┐                           │
│ │ Screen/  │  │ Button   │  │ API      │                           │
│ │ Wireframe│  │ Click    │  │ Call     │                           │
│ └────┬─────┘  └────┬─────┘  └────┬─────┘                           │
├──────┼─────────────┼─────────────┼──────────────────────────────────┤
│      ▼             ▼             ▼                                  │
│ ORANGE: Domain Events (State Changes)                              │
│ ┌──────────────┐ ┌──────────────┐ ┌──────────────┐                 │
│ │ OrderPlaced  │ │ OrderPaid    │ │ OrderShipped │                 │
│ └──────────────┘ └──────────────┘ └──────────────┘                 │
│      │                 │               │                            │
├──────┼─────────────────┼───────────────┼────────────────────────────┤
│      ▼                 ▼               ▼                            │
│ GREEN: Read Models / Projections                                   │
│ ┌──────────────