How does Scala support large-scale asynchronous workflow compensation patterns?

Scala uses saga patterns with compensation actions to rollback distributed workflows.

In distributed systems, long-running workflows cannot use ACID transactions. Scala systems implement saga patterns where each step emits events and defines a compensating action. If a downstream step fails, previous steps are reversed. This is orchestrated via event-driven systems (Kafka, Akka Persistence). This ensures eventual consistency across services.