Event Sourcing Migrator Skill
Migrates applications to event-sourcing architecture, handling event extraction from existing data, event store setup, and CQRS implementation.
Purpose
Enable event sourcing migration for:
- Event extraction from existing data
- Event store setup
- Projection generation
- CQRS implementation
- Snapshot management
Capabilities
1. Event Extraction from Existing Data
- Analyze current state
- Derive historical events
- Generate event streams
- Handle data gaps
2. Event Store Setup
- Configure event store
- Set up partitioning
- Define retention
- Implement subscriptions
3. Projection Generation
- Create read models
- Build projections
- Handle updates
- Manage consistency
4. CQRS Implementation
- Separate read/write
- Implement commands
- Handle queries
- Manage eventual consistency
5. Snapshot Management
- Define snapshot strategy
- Generate snapshots
- Handle restoration
- Optimize performance
6. Event Replay
- Replay events
- Rebuild projections
- Handle migrations
- Test consistency
Tool Integrations
| Tool | Purpose | Integration Method | |------|---------|-------------------| | EventStore | Event database | CLI/API | | Axon Framework | Java event sourcing | Library | | Marten | .NET event store | Library | | EventStoreDB | Event store | CLI | | Custom stores | PostgreSQL/Kafka | Library |
Output Schema
{
"migrationId": "string",
"timestamp": "ISO8601",
"eventStore": {
"type": "string",
"streams": "number",
"events": "number"
},
"projections": [
{
"name": "string",
"status": "string",
"lastPosition": "number"
}
],
"snapshots": {
"enabled": "boolean",
"count": "number"
}
}Integration with Migration Processes
- monolith-to-microservices: Event-driven architecture
- database-schema-migration: Data transformation
Related Skills
domain-model-extractor: Event discovery
Related Agents
data-architect-agent: Event architecture