A social commerce mobile application experienced severe performance degradation during live influencer campaigns due to database lock contention.

The Challenge

The MENA Creator Commerce Network operates a mobile shopping app where regional influencers host live flash sales. During a major regional campaign, over 150,000 concurrent users attempted to purchase the same limited-inventory beauty product simultaneously. This caused the relational database to deadlock, dropping over 70% of potential orders and crashing the app checkout interface.

Our Approach

Novexia designed an asynchronous checkout pipeline. Using Redis for atomic inventory counters, we moved checkout traffic into high-speed memory buffers. Instead of writing directly to the primary database, users’ checkout requests are stored in a distributed Redis queue. A worker service consumes queue elements in a controlled flow, keeping database operations smooth.

We updated their mobile app’s API client logic with optimistic UI state updates and automatic backoff retry algorithms to handle network degradation elegantly during peak crowds.

The Outcome

The checkout system handled their next campaign flawlessly. Over 280,000 concurrent shoppers participated in a live checkout stream, processing 100% of orders without a single database timeout or lock. The platform now supports over 1.2M Monthly Active Users (MAU) and influencer sales conversion ratios surged by 180% due to the frictionless checkout.