In our previous articles about SAGA and CQRS we have tacitly assumed one thing:

Do you know that? You start a new project with a clean domain model. Your Order entity is perfectly normalized, the database relationships are cleanly defined (3rd normal form), and saving an order is lightning fast. Everything feels right.

Imagine our SAGA Orchestrator (Saga Pattern Part 3) running at full speed. Customers are ordering like crazy. Suddenly the Inventory Service becomes slow. Maybe it’s due to a database lock or poor deployment.