CRUD models hide history. When inventory counts disagree across warehouses and stores, you need to replay what happened — not guess from the latest row.
Event sourcing gave Nogea clients a verifiable timeline: every adjustment, transfer, and sale as an immutable fact. Reconciliation became projection, not detective work.
Key Takeaways
- The trade-off is storage and schema evolution — both manageable with compact snapshots and versioned handlers.
- Design for observability from day one — metrics, traces, and structured logs.
- Prefer incremental rollouts over big-bang migrations when systems carry revenue.