Scaling Shopify Apps to Handle 10K+ Merchants
Scaling isn't just about a bigger server; it's about removing bottlenecks. I migrated our app from a monolithic structure to a stateless, horizontally scalable environment.
- Stateless Logic: I moved all session data to Redis, allowing our AWS Load Balancer to distribute traffic across 5+ EC2 instances without losing user state.
- Database Sharding: I optimized our MySQL schema to handle multi-tenant data, ensuring one large merchant's data sync doesn't slow down others.
- Asset CDN: I offloaded all merchant-facing assets to CloudFront to reduce the load on our primary application server.