🫡 @s4chinraja was back for year 2 of his internship. This time he introduced request shielding into Vercel's processing of cache misses for ISR and other request types. This is a major efficiency and stability win for us and our customers. Incredible work again. Read the attached post for last year's crazy story
Vercel has a control plane API that for circular dependency reasons cannot itself be hosted on Vercel. It's a k8s cluster fronted by Vercel's primary ingress service using special hard coded rules. Long-story short, that API routing might be the most core of our core infra.