Go Counting Semaphore Pattern

Tue, 28 Apr 2026 13:40:00 +0530

A counting semaphore limits how many pieces of work can run at the same time.

In Go, the simplest version is a buffered channel. The channel capacity is the number of available permits. A goroutine sends into the channel before starting work and receives from it when the work is done.

Channels on Rohit Garg

Go Counting Semaphore Pattern