Microservices-Based Digital E-commerce Platform for Global Retail

Headquartered in Asia, the client is a global retail powerhouse with a physical presence exceeding 2,500 stores. They are a market leader in the apparel industry, focusing on providing high-quality clothing through a mix of physical storefronts and a rapidly expanding digital presence across North America and Asia.

The client’s legacy infrastructure was composed of disparate third-party systems that hampered global consistency and technical independence.

• Geographical Silos: Individual deployments in regions like the US, China, and Canada made it difficult to maintain a unified global inventory and order view.
• Vendor Dependency: High reliance on external vendors for localized implementations led to increased costs and slower time-to-market for new features.
• Costly Downtime: Systemic instability during high-traffic festive periods resulted in significant revenue loss due to infrastructure outages.

We architected a modular system comprising over 20 platforms, including specialized modules for order fulfillment, inventory management, and regional costing. The backend leverages Java Spring Boot microservices running on Amazon EKS, ensuring narrow, focused responsibilities for each service.

• Multi-Layered Orchestration: Implemented a Backend-for-Frontend (BFF) layer that merges internal APIs to enhance security and provide tailored data for web and mobile interfaces.
• Intelligent Inventory & Costing: Developed a stock system supporting provisional and real booking across multiple warehouses, paired with a business-rule-driven cost engine for automated tax and price lookups.
• Automated Scaling & Deployment: Deployed a rolling strategy for ECS clusters that scales to 200% based on CPU requirements, ensuring stability during sudden demand spikes.
• Distributed Data Strategy: Integrated Redis for distributed caching and Kafka for asynchronous order processing to reduce database strain and improve response times.

The platform utilizes a sophisticated stack to ensure high performance and data consistency:

• Query & Library Optimization: Replaced heavy processing libraries and optimized SQL queries to slash response times.
• API Gateway Security: Channeled all traffic through dedicated gateways for consumer and admin authentication, monitoring, and session logging.
• Reactive Frontend: Developed a React-based Single Page Application (SPA) using Redux-Saga for efficient state management and high-speed user interactions.
• Database Per Service: Each microservice maintains its own PostgreSQL instance to ensure loose coupling and independent database job processing.

The solution was built on a foundation of Cloud-Native Digital Engineering. By using a unified codebase with localized configuration files, we enabled "feature toggling" specific to different countries while maintaining core global logic. The infrastructure runs on two sets of Auto Scaling Groups (ASGs) to balance cost and performance automatically.

• Unprecedented Throughput: Successfully handled a million requests per hour and increased seasonal product sales six-fold in a single day.
• Global Standardization: Replaced high-cost vendor systems with an agile in-house solution deployed across eight countries.
• Resilient Operations: Eliminated festive-season outages by doubling the system's previous load capacity through optimized asynchronous processing.
• Enhanced Inventory Control: Achieved real-time visibility into stock across e-commerce platforms, distribution centers, and physical stores.