A fast-growing global travel brand needed a secure, scalable, and highly available booking platform capable of processing thousands of transactions per minute. Their existing system was fragmented and struggled with security vulnerabilities and latency during peak booking seasons.
They engaged Code Elevator to build a robust backend solution from scratch, with a focus on security, scalability, and real-time data processing.
- Existing booking platform had frequent downtime and slow transaction processing
- The client required real-time availability updates to avoid double bookings
- Must comply with stringent security standards including PCI DSS for payment processing
- Needed flexible API integrations with multiple airline and hotel partners
- The system had to support global users with multi-currency and multi-language features
Code Elevator assigned a dedicated Java development team composed of:
- 2 Senior Java Backend Developers
- 1 DevOps Engineer
- 1 Security Specialist
- 1 QA Engineer
Execution
- Phase 1: Requirements Gathering & Architecture Design (2 Weeks)
Collaborated closely with client stakeholders to define functional and non-functional requirements
Designed microservices-based architecture for modularity and scalability
Incorporated OAuth 2.0 and JWT for secure authentication and authorization - Phase 2: Core Booking Engine Development (5 Weeks)
Developed RESTful APIs with Spring Boot
Implemented real-time inventory management and availability checking
Built payment gateway integrations supporting multiple payment methods
Designed database schema optimized for high transaction throughput (PostgreSQL + Redis caching) - Phase 3: Security & Compliance Implementation (2 Weeks)
Conducted penetration testing and vulnerability scans
Implemented encryption for data at rest and in transit
Ensured PCI DSS compliance for credit card transactions - Phase 4: Testing, Deployment & Monitoring (2 Weeks)
Automated unit, integration, and load testing using JUnit and Gatling
Deployed platform on AWS with auto-scaling and failover configurations
Set up monitoring dashboards and alerts using Prometheus and Grafana
Code Elevator’s Java team delivered a powerful and secure booking platform that transformed our customer experience. Their technical expertise and agile approach made all the difference.
CTO, Global Travel Brand
Results
- Transaction Speed: Booking process time cut by 50%
- System Uptime: Achieved 99.99% uptime during peak seasons
- Security: Passed all compliance audits with zero critical issues
- User Satisfaction: Positive feedback with booking success rates improving by 30%
- Scalability: System supports up to 10,000 concurrent users without degradation
Tools & Technologies Used
- Backend: Java 11, Spring Boot, Hibernate, REST APIs
- Database: PostgreSQL, Redis
- Security: OAuth 2.0, JWT, SSL/TLS, PCI DSS compliance
- Testing: JUnit, Gatling, OWASP ZAP
- Deployment: AWS EC2, RDS, Elastic Load Balancing, Docker, Kubernetes
- Monitoring: Prometheus, Grafana
Transaction Speed
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User Satisfaction
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