CQRS And Event Sourcing Patterns

Use When

• Domain behavior requires immutable event history
• Query shapes differ heavily from command workflows

Workflow

1. Define command model invariants and event schema strategy.
2. Persist domain events as source of truth.
3. Build projections for query-optimized read models.
4. Design replay, snapshot, and projection catch-up operations.
5. Implement versioning and backward-compatible event evolution.

Required Checks