Tapahtumalähtö
Tapahtumalähtö, often translated as event sourcing, is an architectural pattern that structures an application around a sequence of immutable events. Instead of storing the current state of an entity directly, event sourcing records every change as a distinct event. These events are appended to an ordered log, often referred to as the event store.
When an application needs to retrieve the current state of an entity, it does so by replaying
The benefits of event sourcing include a complete audit trail of all changes, enabling easy debugging and