| name | cqrs-event-sourcing |
| compatibility | ["github-copilot-cli"] |
| description | CQRS and Event Sourcing patterns for scalable, auditable distributed systems with command models, event stores, and read projections. USE FOR: design CQRS architecture for a service, implement event sourcing for audit history, separate command and query models, plan read model projections and replay, add saga orchestration for eventual consistency. DO NOT USE FOR: simple CRUD app design, single-table admin tools, basic ORM mapping questions. |
| category | architecture |
| metadata | {"category":"architecture","maturity":"stable","audience":["developer"]} |
| allowed-tools | [] |
CQRS & Event Sourcing Patterns
Patterns for implementing CQRS and Event Sourcing in distributed systems.
Quick Navigation
| Reference | Contents |
|---|
| references/command-side.md | Commands, command handlers, aggregate design |
| references/event-sourcing.md | Event store, aggregate reconstruction, snapshots, versioning |
| references/read-side.md | Queries, read models, event subscribers, eventual consistency |
| references/sagas-operations.md | Saga pattern, event replay, monitoring, disaster recovery |
Core Flow
User → Command → Handler → Event Store → Events → Event Bus
↓
Event Handlers → Read Models → User
When to Use
Use when an audit trail, independent read/write scaling, or multiple read-optimized views are
needed. Avoid for simple CRUD with uniform load.
