High-volume headless commerce engine with real-time AI recommendations
Sub-second storefront with event-driven order processing capable of 12k peak orders/min.
- Client
- Urban Threads & Co.
- D2C Fashion & Apparel Brand
- Location
- Bengaluru
- Timeline
- 12 weeks MVP launch, continuous bi-weekly feature sprints
- Headline result
- +28%
- Increase in checkout conversion
Overview
A fast-growing fashion e-commerce brand was losing customers during flash festive sales as their monolithic platform crashed under traffic surges. Nexasoft replaced the monolith with a decoupled headless architecture featuring edge-rendered storefronts, a distributed checkout queue, and an in-memory recommendation engine.
The challenge
- Frequent checkout crashes and timeouts during Diwali and festive promotional sales.
- High page load times (>4.8 seconds on 4G mobile) causing a 68% mobile drop-off rate.
- Inventory synchronization delays resulting in accidental overselling and client refunds.
- Rigid CMS preventing the marketing team from launching campaign pages rapidly.
What we built
- Built a modern headless frontend on Next.js edge runtime with ISR (Incremental Static Regeneration).
- Engineered an event-driven order processing pipeline with Redis caching and Kafka queue isolation.
- Integrated machine learning recommendation model showing personalized products based on cart intent.
- Connected warehouse management systems for sub-second live inventory updates.
Results
- Increase in overall checkout conversion rate
- +28%
- Peak orders processed per minute without a single error
- 12,000
- Average mobile storefront page load time achieved nationwide
- 750ms
- Growth in average order value (AOV) driven by AI recommendations
- 18%
Architecture
- Next.js App Router deployed to edge CDN nodes.
- Node.js microservices with Redis Cluster for distributed cart state.
- Apache Kafka for order queue decoupling and payment webhooks.
- PostgreSQL with Read Replicas and Elasticsearch for lightning-fast catalog search.
“Our biggest sale day of the year was completely stress-free. Zero downtime, blazing fast checkouts, and our conversion rate jumped significantly.”
Have a challenge like this?
Tell us about it. We'll reply within one working day and can usually start with a short discovery sprint.