How to detect if stream has backpressure?

I'm learning about Node.js streams and often I see this backpressure problem. There are many arcticles on how to deal with backpressure. But first I want to know how can you detect backpressure and if I need to optimize my code. Also I want to know if there are more tricky cases regarding streams. And I need some way how to detect them or how to mock them for testing purposes.Thanks!

Submitted August 02, 2020 at 04:30PM by Gugis