I am one of the team of MongoDB engineers working with Epic on this issue, and I can assure you that the situation is under control and we have everything in place to scale this application to much higher numbers. However, we're not publishing details about our support cases, especially while they are in progress. That is something for Epic to decide, and I do assume they will eventually say in public just how well MongoDB is, in fact, performing for them.

Thanks for responding. I look forward to Epic updating their post mortem.

Not sure if you are aware but what you are asking for never happens.

It is not professional or appropriate for vendors to be revealing (a) that clients are having issues and need support and (b) the specific workings of technologies or processes within the client's business.