@ -237,10 +237,18 @@ namespace Microsoft.eShopOnContainers.Services.Ordering.Infrastructure
public async Task < int > SaveEntitiesAsync ( CancellationToken cancellationToken = default ( CancellationToken ) )
{
// Dispatch Domain Events collection.
// Choices:
// A) Right BEFORE committing data (EF SaveChanges) into the DB will make a single transaction including
// side effects from the domain event handlers which are using the same DbContext with "InstancePerLifetimeScope" or "scoped" lifetime
// B) Right AFTER committing data (EF SaveChanges) into the DB. will make multiple transactions.
// You will need to handle eventual consistency and compensatory actions in case of failures.
await _mediator . DispatchDomainEventsAsync ( this ) ;
// After executing this line all the changes performed thought the DbContext will be commited
var result = await base . SaveChangesAsync ( ) ;
// Dispatch the Domain Events collection right after saving/committing data into the database
await _mediator . DispatchDomainEventsAsync ( this ) ;
return result ;
}
}