http://blog.wuxu92.com/notes-of-go-by-example-part-3/

https://blog.csdn.net/lanyang123456/article/details/79794183

一般使用以下方式去 sleep

    t := time.NewTicker(10 * time.Second)
    defer t.Stop()
    for {
        <-t.C
        log.Infoln("lalala")
    }