I wanted to try the new 2.0 async features and used the C# Driver Tutorial with the following snippet:

Parallel.For(0, 100000, async _ =>
{
var e = new Entity

;
await collection.InsertOneAsync(e);
});

But after a short period my program fails:

Unhandled Exception:
Unhandled Exception:
Unhandled Exception: MongoDB.Driver.MongoWaitQueueFullException: The wait queue
for acquiring a connection to server localhost:27017 is full.
at MongoDB.Driver.Core.ConnectionPools.ExclusiveConnectionPool.<AcquireConnec
tionAsync>d__0.MoveNext()
— End of stack trace from previous location where exception was thrown —

When I change the connectionstring to: "mongodb://localhost?maxpoolsize=20000 it seems to work, but hogs alot of memory (> 1GB Ram).

Btw. 1.1.0 works totally fine.