Acquire the Complete Restaurant POS & SaaS Codebase

// High-Concurrency Transaction with Atomic lockForUpdate
public function createOrder(array $payload, int $tenantId): Order 
{
    return DB::transaction(function () use ($payload, $tenantId) {
        // Strict tenant isolation & atomic order counter
        $table = Table::where('restaurant_id', $tenantId)
                      ->lockForUpdate()
                      ->findOrFail($payload['table_id']);

        $order = Order::create([
            'restaurant_id' => $tenantId,
            'table_id'      => $table->id,
            'total_amount'  => $payload['grand_total'],
            'status'        => 'received'
        ]);

        // Dispatch real-time KOT to kitchen printer & KDS socket
        event(new NewOrderPlaced($order));
        return $order;
    });
}