If you’re trying to synchronize a pool of workers (e.g. allow n goroutines to crunch away at some amount of work) then channels are a very good way to go about it, but if all you actually need is a counter (e.g page views) then they are overkill. The sync and sync/atomic packages are there to help.
import "sync/atomic"
type count32 int32
func (c *count32) inc() int32 {
return atomic.AddInt32((*int32)(c), 1)
}
func (c *count32) get() int32 {
return atomic.LoadInt32((*int32)(c))
}
Go Playground Example