go实现限流器

向桶里面放入令牌
这个用管道吧   线程安全

var capacity = 100


var tokenBucket = make(chan struct{}, capacity)


func main(){

   var fillInterval =time.Second

   fillToken := func() {
      thicker :=time.NewTicker(fillInterval)
      for {
         select{
         case <-thicker.C:
            tokenBucket <- struct{}{}
            fmt.Println("11111111")
         default:
            fmt.Println("current number of token is",len(tokenBucket),time.Now())


         }
      }
   }
   go fillToken()
   //time.Sleep(time.Hour)

}

从桶中取出令牌