Clarification on BoundedCapacity for Dataflow

[TonyValenti]

How does BoundedCapacity control the processing of data?

If I have the pipeline:
A -> B -> C
And B has a bounded capacity of 10, does that mean:

1. B can have up to 10 items waiting for it to process.
2. C can have up to 10 items waiting for it to process.

Does it control an input buffer or output buffer?

[gfoidl]

And B has a bounded capacity of 10, does that mean:

It means that B can buffer max. 10 items.
So A can't write to B successfully if Bs buffer is full, so A gets backpressure from B.

Although the concept of input and output buffer doesn't explicitely exist, this one refers to input (from A to B, see above).

Best is to create a simple console app and play around with different producer and consumer speed of A, B, and C to see whats going on (with debugger attached / or console output).