public static function getOrderSerialNumber()
{
$timestamp = time();
$datePrefix = date('ymd', $timestamp);
$key = self::CACHE_KEY_ORDER_COUNT . $datePrefix;
// 如果流水号计数器数据不在缓存中，则尝试从数据库中恢复
if (!Cache::has($key)) {
// 从数据库中获取今日的订单数
$counter = Order::getTodayCount();
$expiresAt = Carbon::now()->addMinutes(1440);
Cache::put($key, $counter, $expiresAt);
}
$value = Cache::increment($key);
return $datePrefix . str_pad($value, 10, '0', STR_PAD_LEFT);
}
