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.<p>How can they know the internal infrastructure but have to <i>assume</i> the app language?<p>Edit: So the entire piece is taken almost verbatim as-is from a couple old articles on instagram engineering blog.<p>It might as well just redirect to: <a href="https://instagram-engineering.com/what-powers-instagram-hundreds-of-instances-dozens-of-technologies-adf2e22da2ad" rel="nofollow noreferrer">https://instagram-engineering.com/what-powers-instagram-hund...</a><p>This is against the guidelines:<p>> Please submit the original source. If a post reports on something found on another site, submit the latter.