How Instagram scaled to 14 million users with only 3 engineers
> we can assume that Instagram was written using Objective-C and a combination of other things like UIKit.How can they know the internal infrastructure but have to assume the app language?Edit: So the entire piece is taken almost verbatim as-is from a couple old articles on instagram engineering blog.It might as well just redirect to: https://instagram-engineering.com/what-powers-instagram-hund...This is against the guidelines:> Please submit the original source. If a post reports on something found on another site, submit the latter.