We went live recently with a reporting solution which sends details of over-the-counter trades to a global trade repository. It's a fairly complex solution but we've had a great team, did lots of dry-run testing and the initial load of 250K open trades was stress free. In the run up to go-live we'd given some thought to failure scenarios and how we would recover from them. The solution has some significant external dependencies, and if they didn't behave as expected we could be left with large numbers ......
A github sample for a WCF solution where a service can make other service calls remotely through a channel, or locally through the service implementation
MSDN Code Gallery sample integrating BizTalk and nServiceBus for scalable, distributed processing of an Excel file upload
MSDN Code Gallery sample using nServiceBus for scalable, distributed processing of an Excel file upload