golang 统计代码执行时间
start := time.Now()
resp, err := client.Get(url)
elapsed := time.Since(start)
fmt.Println("该函数执行完成耗时:", elapsed)
if err != nil {
if elapsed >= 10*time.Second {
log.Println("dail timeout", err)
log.Println("网站不可用:", url)
return 2
}
return 3
}