in main.go [253:261]
func Allow(limiter *redis_rate.Limiter, app_id sql.NullString) *redis_rate.Result {
res, err := limiter.Allow(app_id.String, redis_rate.PerMinute(100))
if err != nil {
panic(err)
}
// fmt.Println(res.Allowed, res.Remaining)
// Output: true 9
return res
}