Your service should return a 202 Accepted at the initial request with a way for the client to check the current status, either through the Location header or as part of the content.
I implemented a similiar process for importing/processing of large files and to be honest, I have never had a problem. Perhaps resolving the reason that the IsComplete never gets set will make this more resilient.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.