Why does Rx buffer continuously perform method when buffer contains no items?

Question

I have a Rx Observable that acts as a buffer. Right now it performs the method in Subscribe either when it gets 10 items, or after 100 milliseconds, whichever comes first.

Answer 1

Perhaps try it like this:

public MyBufferClass(IMyServer server, IScheduler scheduler)
{
    this.serverRequests = new Subject>>();

    this.serverRequests
        .GroupByUntil(x => 1, x => Observable.Timer(TimeSpan.FromMilliseconds(1000)))
        .SelectMany(x => x.ToArray())
        .Subscribe(buffer => GetMultipleItemsFromServer(buffer));
}  

That doesn't give you empty results.

And the answer to your question regarding .Buffer(...) - that's the way it has been designed. Nothing more complicated than that.