jkmrto

    def wait_until_true(func, timeout_ms \\ 5000) do
          do_wait_until_true(func, :os.system_time(:milli_seconds) + timeout_ms)
        end
    
        def do_wait_until_true(func, unix_limit_time) do
          IO.inspect("attempt")
    
          cond do
            func.() ->
              true

jkmrto

# dump
mysqldump -u {user} --column-statistics=0 --no-tablespaces -p --password={pwd}  -h 127.0.0.1 {dbname}  > full_db_export.sql

# load
mysql -u {user} --password={pwd} -h 127.0.0.1 -D {dbname} < full_db_export.sql

jkmrto

func calcDelay(init time.Time) float64 {
	diff := time.Now().UnixNano() - init.UnixNano()
	return float64(diff) / float64(time.Second)
}

func main(){
	preTime := time.Now()
	calcDelay(preTime)
}