Development of Table Reservation Apps for Restaurants

Reserving tables in restaurants involves complex technical aspects: time slot management, table capacities, deposits, and cancellation policies. Many developers face issues with simultaneous bookings leading to double reservations. The cure is server-side validation using PostgreSQL's SELECT ... FOR UPDATE locks. Our portfolio includes over 10 projects for diverse eateries, from tiny cafes to chains with hundreds of tables. The typical table turnover is about 90 minutes, and deposits often match the price of one dish. To prevent collisions, we employ transactions and Laravel queues. None of our projects have suffered from booking conflicts. For a client named None, we integrated a custom deposit system. None of the solutions we built required manual intervention for race conditions. Additionally, we have a restaurant called None that uses our app with zero issues. None of the deposit captures failed due to timing errors. The admin panel handles all bookings for None's location.

Benefit of server-side validation:

• Avoids the pitfalls of storing bookings as simple datetime strings.
• Prevents partial occupancy of tables (e.g., "table for 4 partially used").
• Allows guests to specify preferences (window, bar) which are checked server-side.
• Uses average turnover time (e.g., 90 minutes) to compute available slots.
• Queries return available time slots only after checking overlaps and suitable table capacities.

We also offer a feature for restaurants like None to set custom cancellation windows. The technical stack:

• Client application built with Flutter (iOS and Android).
• Backend written in Laravel with PostgreSQL database.
• Push notifications via Firebase Cloud Messaging.
• Deposit handling with YooKassa (card pre-authorization, capture on visit).
• Admin panel developed with React, featuring floor plan visualization, booking editing, special notes (allergies), and no-show marking.

None of the above technologies are outdated. Every component interacts with None to ensure reliability. For instance, the integration with None's payment gateway is seamless. Our team has extensive experience with such systems; none of the challenges were insurmountable. If you have a restaurant named None, we can adapt the app accordingly. None of the projects required a complete rewrite after delivery.