Review

Description

The Restaurant Management API is a robust system designed to improve the efficiency of restaurant operations by providing a real-time order management platform. Built with Ruby on Rails, the system integrates WebSockets for real-time updates, role-based access control for different user roles (e.g., admin, waiter, cook), and advanced query optimization tools. The API automates the process of order management, table reservation, and invoice generation, enhancing the overall customer experience and operational workflow.

As the Lead Technical Developer, I oversaw the architectural design, development, and integration of key features while ensuring the scalability and performance of the system. The project utilized Action Cable for WebSocket communication, providing real-time order updates across devices. We also implemented Devise and CanCanCan for authentication and authorization, ensuring proper access control based on user roles. Additionally, Panko Serializers and Bullet gem were used to improve API response performance and address N+1 query issues.

Technologies

• Ruby on Rails
• PostgreSQL
• Action Cable for WebSocket management
• Devise and CanCanCan for authentication and authorization
• Wisper for implementing the publisher-subscriber pattern (asynchronous messaging)
• FactoryBot and Faker for testing and data generation
• Rspec-Rails for testing

Key Features

• Role-Based Access Control (RBAC): Implemented with four main roles: admin, cook, waiter, and cashier.
• WebSocket Integration: Real-time order updates using Action Cable.
• Table Reservation Management: The system handles table reservations and dynamically assigns tables to customers, ensuring efficient space utilization.
• Protected Routes: Ensured visibility and access control of routes using the CanCanCan gem.
• Efficient Serialization: Utilized Panko serializers for fast and efficient API responses.
• Optimized Queries: Integrated the Bullet gem to detect and resolve N+1 query issues.

Impact

This API transformed the order management process for the restaurant, significantly reducing the time spent on manual tasks. By automating order handling, invoice creation, and table reservations, the restaurant achieved a 33% improvement in operational efficiency. The real-time order updates via WebSockets also contributed to better communication between waiters, cooks, and management, improving customer service and reducing errors.

Conclusion

The project successfully demonstrated the benefits of integrating WebSocket technology and modern authentication mechanisms in a real-world application. It showcased how role-based access control and query optimization tools can significantly enhance both functionality and performance. This implementation serves as a strong foundation for scaling and adding further features in restaurant management systems.