Articles
How we prepare Shopify for BFCM
Kyle Petroski and Matthew Frail's inside look at the nine months of capacity planning, chaos engineering, and load testing at 150% of projected peak that goes into Shopify surviving Black Friday/Cyber Monday, a weekend that hit 489 million requests per minute across 90 petabytes of data in 2025. What stands out is the organizational structure as much as the technical one: capacity planning, infrastructure roadmap, and readiness testing run as three parallel tracks for most of a year. A good reminder that scaling for a known traffic spike is a program, not a sprint right before the event.