mongodb/mongo-csharp-driver — comment on commit 4c1b6d2a80cf1b9b87157b9d758ebe63d864b9ef
File:  line 0
By craiggwilson:

Apparently, I'm way off base here...

But are we really saying that it's ok to allow a single reader at a time? In this particular case, while this is fast because there isn't much going on inside, it is still restricted to a single consumer at any point in time acquiring the delegate underneath. This just seems like a huge bottleneck and seems contrary to what mongodb is built for.