The Challenge
The client was struggling with a massive legacy monolithic architecture. During major sales events like White Friday, their database deadlocked due to inventory sync delays across 4 different physical warehouses and 2 digital storefronts. This led to overselling out-of-stock items, resulting in a 15% cancellation rate and severe brand damage.
Furthermore, their mobile application load times had degraded to 4+ seconds, severely impacting user acquisition costs through high bounce rates.
Our Solution
We redesigned their digital infrastructure by implementing a microservices architecture. We broke down their monolith into independent, highly scalable services. The inventory system was rewritten using Go and Redis to handle thousands of concurrent read/write operations seamlessly.
For the front-end, we deployed a headless approach utilizing Next.js for web and a refactored Flutter application for mobile, connecting everything via a unified API gateway managed by AWS API Gateway.
The Results
- 99.99% Uptime: Achieved during peak White Friday traffic scaling up to 25,000 concurrent users instantly.
- Sub-second Load Times: Page load speed improved from 4.2s to 0.8s on 3G networks.
- Zero Overselling: Inventory syncing issues were completely eradicated, bringing cancellation rates down to under 0.5%.
- 30% Revenue Increase: The faster, reliable checkout process increased the overall cart conversion rate dramatically within the first quarter post-launch.