Go Concurrency - Semaphore

Thu, 29 Oct 2026 00:00:00 -0300

In the worker pool I fixed how many goroutines exist. In backpressure a channel’s capacity held the producer back.

But what if I have ten files to download, and the server kicks out anyone who opens more than three connections? I want one goroutine per file, and only three of them downloading at the same time.

Go Concurrency - Backpressure

Tue, 27 Oct 2026 00:00:00 -0300

In the tee a 250 millisecond worker held back the other one and the generator along with it, and the program took 2.5 seconds. I said that had a name and that it would come back.

Here it is.

What backpressure is Link to heading

Backpressure is when a slow consumer makes the producer slow down, instead of letting the work pile up without limit. Nothing gets dropped, and the one who waits is the producer.

Buffer on cassiobotaro

Go Concurrency - Semaphore

Go Concurrency - Backpressure

What backpressure is Link to heading