BayuBuana is an advanced Computer Reservation System (CRS) serving as an online travel booking platform in Southeast Asia. Tailored exclusively for travel agents, it offers a comprehensive suite of services, streamlining booking processes and ensuring seamless travel experiences for users.

Enhanced Online Travel Platform: Confidential 

## Bayu Buana CRS (Computer Reservation System)

### Overview {#overview}

Bayu Buana Travel Services confidentially operates as an online platform committed to delivering seamless travel booking experiences for users across Southeast Asia. Integrated with prominent aggregator providers such as SQ NDC, SABRE, and OPSIGO, our platform offers an extensive array of services, encompassing flight bookings, hotel reservations, vacation packages, and beyond. This documentation delineates pivotal facets of the project, elucidating its features, utilized technologies, and future prospects.

Bayu Buana serves as a CRS (Computer Reservation System) accessible solely to authorized travel agents, facilitating streamlined booking processes and comprehensive travel management capabilities.

### Problem {#problem}

Booking travel services online can be a daunting task due to various challenges faced by users. These challenges may include limited access to accurate flight information, complex booking processes, and a lack of user-friendly platforms that cater to their needs.

### Solving {#solving}

Bayu Buana Travel Services aims to address these challenges by offering a user-friendly platform that simplifies the booking process and provides real-time updates on flight availability and pricing. By integrating with leading aggregator providers, the platform ensures that users have access to a wide range of flight options and competitive prices, making the booking experience more convenient and efficient.

### Discussion{#discussion}

#### Core Features:

1. **Comprehensive Travel Services:** 
   Bayu Buana provides users with a one-stop solution for all their travel needs, offering services such as flight bookings, hotel reservations, vacation packages, and more.

2. **Integration with Aggregator Providers:** 
   The platform seamlessly integrates with aggregator providers like SQ NDC, SABRE, and OPSIGO, enabling users to access a vast array of flight options and competitive prices from multiple airlines.

3. **User-friendly Interface:** 
   Bayu Buana boasts an intuitive website and mobile app interface, designed to provide users with a smooth and hassle-free booking experience. The interface is easy to navigate, allowing users to quickly search for flights, select their preferred options, and complete their bookings with ease.

4. **Real-time Availability:** 
   Integration with aggregator providers ensures that users receive real-time updates on flight availability and pricing, empowering them to make informed decisions when booking their travel arrangements.

5. **Secure Booking:** 
   Security is a top priority for Bayu Buana. The platform is equipped with robust security features, including Sentry.io integration for error tracking and monitoring, to ensure that users' personal and financial information is protected throughout the booking process.


#### Core Process 

1. **Page Search Flight:**

   ![bb-flight-search](https://dikhimartin.vercel.app/assets/img/portfolio/bayu-buana/bb-flight-search.png)
   Users can search for flights based on various criteria such as trip type, departure/arrival cities, dates, flight class, and passenger details. The backend system processes user queries, retrieves relevant flight data from aggregator providers, and presents the search results to the user.

2. **Page Flight Offer List:**

   Upon accessing this page, users encounter a comprehensive list of flight options meticulously categorized by either fares or schedules. Our backend system efficiently curates and showcases these flight offers sourced from various aggregator providers, ensuring users have immediate access to precise pricing and availability details.

   - **View by Fares:**
     
     ![bb-flight-search](https://dikhimartin.vercel.app/assets/img/portfolio/bayu-buana/bb-flight-offer-view-by-fares.png)

     This option enables passengers to select from pre-defined bundled flight packages provided by our partners, simplifying the booking process and offering convenience in choosing suitable travel options.
     
   - **View by Schedule:**
     
     With this feature, passengers can tailor their flight selections based on flexible departure and return schedules, allowing for greater customization and adaptability to individual travel preferences.
     
     - Select Departure
     
       ![bb-flight-search](https://dikhimartin.vercel.app/assets/img/portfolio/bayu-buana/bb-flight-offer-view-by-schedule-departure.png)
     
     - Select Return
     
       ![bb-flight-search](https://dikhimartin.vercel.app/assets/img/portfolio/bayu-buana/bb-flight-offer-view-by-schedule-return.png)
     
       

3. **Page Passenger:** 

   ![bb-flight-search](https://dikhimartin.vercel.app/assets/img/portfolio/bayu-buana/bb-flight-passenger.png)

   Users input passenger details such as names, ages, and contact information. The backend system validates and securely stores passenger data in the database, ensuring that it is handled with the utmost confidentiality and integrity.

4. **Page Seat Selection:** 

   ![bb-flight-search](https://dikhimartin.vercel.app/assets/img/portfolio/bayu-buana/bb-flight-seat-selection.png)

   Users select their seats for the chosen flights. The backend system manages seat availability and reservations, updating the database with seat selection information to ensure that users' preferences are accommodated.

5. **Page Add-on Selection:** 

   ![bb-flight-search](https://dikhimartin.vercel.app/assets/img/portfolio/bayu-buana/bb-flight-addon-selection.png)

   Users have the option to select additional services such as baggage and meals. The backend system handles add-on selections and updates the booking accordingly, ensuring that users' preferences are reflected in their travel arrangements.

6. **Book Review:** 

   ![bb-flight-search](https://dikhimartin.vercel.app/assets/img/portfolio/bayu-buana/bb-flight-book-review.png)

   Users review a summary of their booking details before finalizing the booking. The backend system aggregates and presents all relevant booking information fetched from the database, allowing users to verify the accuracy of their selections before confirming their bookings.

7. **Issue Ticket:** 

   ![bb-flight-search](https://dikhimartin.vercel.app/assets/img/portfolio/bayu-buana/bb-flight-book-issued.png)

   Once the user confirms the booking, tickets are issued. The backend system coordinates with airline systems to issue tickets, update booking status, and handle any errors or exceptions during the ticketing process, ensuring a smooth and seamless experience for the user.

   > **Note:**
   >
   > 
   >
   > While the actual features are more advanced due to company secrecy, we can provide a general overview. The platform covers features such as "Book Only issued latter," which allows users to modify their flight after issuance, including changes to seat selection and add-on services. The system also handles modifications to flights before issuance, utilizing PNRs generated from the "Book Only issued latter" feature. Additionally, users can rebook or cancel their flights, with the platform offering support for after-sales services and managing cancellations effectively. These advanced features demonstrate the platform's commitment to providing a comprehensive and user-centric travel booking experience.

#### Backend Engineer Role

As a backend engineer for Bayu Buana Travel Services, my role is pivotal in designing, implementing, and maintaining the backend systems that power the platform. my responsibilities include:

- Developing robust APIs to support various functionalities of the travel booking platform, such as flight search, booking management, and payment processing.

- Integrating with aggregator providers to fetch real-time flight data, availability, and pricing, ensuring users have access to accurate and up-to-date information. This integration involves working with different partner APIs with varying behaviors, such as SQ NDC using SOAP, OPSIGO using RESTful APIs, etc.

- Implementing complex search algorithms to handle user queries based on trip type, flight preferences, departure/arrival cities, dates, flight class, and passenger details. These algorithms ensure efficient and accurate retrieval of relevant flight options for users.

- Designing database schemas and optimizing queries to ensure efficient storage and retrieval of data, maintaining database integrity and performance. This involves modeling data structures that accommodate the platform's needs and optimizing database queries for speed and scalability.

- Collaborating with frontend developers to define API contracts and ensure seamless integration between frontend and backend systems. Clear communication and alignment between backend and frontend teams are essential to deliver a cohesive and user-friendly experience.

- Implementing security measures to protect sensitive user information and prevent unauthorized access, ensuring compliance with data protection regulations. This includes implementing authentication, authorization, and encryption mechanisms to safeguard user data and transactions.

#### Tech Stack

- **Golang**: As a backend engineer, my role involves developing robust APIs and backend systems using Golang, ensuring high performance and scalability for handling travel booking operations.

- **Clean Architecture Pattern**: We adhere to the clean architecture pattern, promoting modularity, scalability, and maintainability of the backend codebase.

- **Microservices**: Implementing microservices architecture facilitates flexibility and scalability, allowing individual components to be developed, deployed, and scaled independently.

- **React JS**: Collaborating with frontend developers, we ensure seamless integration between backend APIs and the React JS frontend, enabling the creation of dynamic and interactive user interfaces.

- **Sentry.io**: Integration with Sentry.io provides comprehensive error tracking and monitoring capabilities, allowing proactive detection and resolution of issues to maintain platform stability.

- **Redis**: Utilizing Redis for caching purposes optimizes performance by storing frequently accessed data in memory, reducing latency and enhancing user experience.

- **PostgreSQL**: we design and manage the PostgreSQL database, ensuring robust data storage and retrieval for various platform functionalities.

- **OAuth2:** OAuth2 is a widely used authorization framework that allows secure and delegated access to resources on behalf of a user. It provides authorization flows for web, mobile, and desktop applications, allowing users to grant limited access to their resources without sharing their credentials.

### Conclusion {#conclusion}

Bayu Buana Travel Services, with its robust backend infrastructure and user-centric approach, aims to redefine the travel booking experience. As a backend engineer, my role is crucial in ensuring the platform's reliability, scalability, and security, contributing to its success and growth. By developing robust backend systems and seamlessly integrating with aggregator providers, we are able to provide users with a seamless and enjoyable travel booking experience, empowering them to plan their journeys with confidence and ease.

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