import (
 "fmt"
 "time"
)

func testTimer1() {
 go func() {
  fmt.Println("test timer1")
 }()

}

func testTimer2() {
 go func() {
  fmt.Println("test timer2")
 }()
}

func timer1() {
 timer1 := time.NewTicker(1 * time.Second)
 for {
  select {
  case -timer1.C:
   testTimer1()
  }
 }
}

func timer2() {
 timer2 := time.NewTicker(2 * time.Second)
 for {
  select {
  case -timer2.C:
   testTimer2()
  }
 }
}

func main() {
 go timer1()
 timer2()
}