Shopify Engineering·May 12, 2026·12 min read64We replaced Redis with MySQL for inventory reservations—and it scaled (2026) - ShopifyHow we used SKIP LOCKED, composite primary keys, and connection visibility to hit our scale targets.DatabasesMySQLRead original on shopify.engineeringDiscussion around the webHacker News345 · 260 💬Score breakdownTechnical depth85Practical value60Originality85Writing quality96Source reputation86Recency0External engagement38On-site engagement82NayaRead shows a summary and links to the original article. The full article is hosted on shopify.engineering.