The Monolith Problem
Lexicon Core experienced rapid growth in Q4 2023, causing their existing architecture to buckle under traffic spikes. The primary bottlenecks were server-side rendering times averaging 2.5 seconds and database locking during flash sales.
The objective was clear: decouple the frontend experience from the inventory logic to allow for instantaneous page loads while maintaining strict inventory consistency.
Edge Architecture
We implemented a headless architecture using React Server Components. By moving the rendering logic to the edge, we cache static product data globally while streaming dynamic pricing and stock levels in real-time.
Optimistic UI
Cart interactions update instantly on the client, syncing with the database in the background. This reduces perceived latency to zero.
Inventory Locking
We utilized Redis for atomic inventory locking during checkout, preventing overselling during high-concurrency drops.
Deployment & Results
Since deployment, Lexicon Core has successfully handled three major product drops with zero downtime. The mobile conversion rate increased by 22% immediately following the migration, attributed largely to the sub-second page transitions.