Project overview
The challenge
- Travel agencies required real-time flight search across multiple airlines and GDS providers, but each provider had different API protocols and response formats.
- Existing solutions lacked proper API documentation, making integration difficult for B2B partners and requiring extensive support calls.
- Security concerns around payment data and PII (personally identifiable information) required robust encryption beyond HTTPS.
- Large API responses (flight options with metadata) caused slow load times on mobile networks in emerging markets.
Developed a sophisticated flight search and booking engine integrating multiple Global Distribution Systems (GDS) to provide real-time flight availability, pricing, and booking capabilities. Built with Express.js and optimized for high-throughput concurrent requests.
Implemented comprehensive API documentation using Swagger/OpenAPI standards, enabling seamless integration for B2B travel partners. Integrated LogRocket for production monitoring and debugging, providing real-time insights into search performance and user behavior.
Engineered secure booking workflows with RSA encryption for payment data and sensitive customer information. Used compression middleware to reduce API response size by 40%, improving performance for mobile and bandwidth-constrained clients.
Technical architecture
API Gateway: Express.js with Swagger middleware for automatic request validation and API documentation generation.
GDS Integration: Multiple adapters for different flight providers, each handling protocol-specific communication (REST, SOAP, XML).
Data Normalization: Standardizes disparate flight data structures into a unified response format for consistent client experience.
Performance Optimization: Compression middleware reduces response payloads, MongoDB caching minimizes redundant GDS queries.
Security Layer: RSA encryption for sensitive booking data, separate from transport-layer security, providing defense-in-depth.
Key challenges & solutions
API Documentation for B2B Integration
Implemented Swagger/OpenAPI specifications with JSDoc annotations throughout the codebase. This generated interactive documentation automatically, reducing partner integration time from weeks to days.
Production Monitoring and Debugging
Integrated LogRocket to capture real-time API usage patterns, error rates, and performance bottlenecks. This visibility enabled proactive issue resolution before customers reported problems.
Performance for Mobile Clients
Applied compression middleware reducing average response size from 350KB to 210KB (40% reduction), dramatically improving mobile user experience in markets with limited bandwidth.
Impact & results
Reduced B2B partner integration time by 70% through comprehensive Swagger documentation
Achieved 40% reduction in API response size via compression, improving mobile performance
LogRocket integration enabled 99.5% uptime through proactive monitoring and alerts
Secure booking workflows with RSA encryption, meeting PCI-DSS compliance requirements
Key features
- Multi-GDS flight search integration
- Real-time availability and pricing queries
- Swagger/OpenAPI documentation
- LogRocket production monitoring
- RSA encryption for secure transactions
- Response compression (40% size reduction)
- MongoDB session management
- MSSQL transactional logging
- Email notifications for bookings
- Error handling and graceful degradation