In order to sleep, we need time lib. Simplest case, when we want to sleep for a single second, we do it like:

package main
import "time"

func main() {
  // ...
  time.Sleep(time.Second)
  // ...
}

Sleep for seconds

In order to sleep for several seconds, we multiple by the amount of second we need. E.g. to sleep for 10 seconds:

package main
import "time"

func main() {
  // ...
  time.Sleep(10 * time.Second)
  // ...
}

Sleep for milliseconds

time.Millisecond can be used to sleep for X milliseconds:

package main
import "time"

func main() {
  // ...
  time.Sleep(50 * time.Millisecond)
  // ...
}

You can also sleep for minutes or hours.