md5生产唯一性的值

package main

import (
    "crypto/md5"
    "encoding/hex"
    "github.com/golang/glog"
    "strconv"
    "time"
)

func md5V(str string) string  {
    h := md5.New()
    h.Write([]byte(str))
    return hex.EncodeToString(h.Sum(nil))
}

func main() {
    now := time.Now()
    for i:=0;i<10;i++{
        str:="wilson"+strconv.Itoa(i)
        glog.Info(md5V(str))
    }
    glog.Info(time.Now().Sub(now))
}