add-domain-event

Domain events in C# automate cache invalidation by defining event records raised in aggregates and wiring handlers through a mediator-based dispatch model to invalidate caches and manage cross-aggregate side effects.

Structuring domain events in .NET involves defining events as records, organizing them into recommended namespaces and filenames, and using a mediator-based dispatch model to route events to handlers for cache invalidation and notifications.

You need domain events for cross-aggregate side effects when coordinating changes across multiple aggregates becomes error-prone and requires a structured event-driven pattern to handle cache invalidation and notifications reliably.

To create a domain event handler in dotnet, define the event as a record, place it in the correct namespace, and implement a handler class that responds through the mediator dispatch model to perform cache invalidation or cross-aggregate updates.

Yes, this event-driven pattern provides ready-made structures for cache invalidation, notifications, and cross-aggregate updates by attaching event records like PostPublishedEvent to aggregates and routing them to corresponding handlers.