Resources: Feeds

Open Instagram and you're immediately dropped into motion. The news feed is already populated. Stories are queued at the top. Within seconds, the app has a read on what you're likely to engage with. That read comes from signals (watch time, shares, saves, replies, viewing patterns) that update ranking systems and shape what's

Activity feeds look like the simplest feature in your app. A reverse-chronological list of stuff that happened. Sort by timestamp, render, done. That was then. Feeds are now a composite of the underlying event and everything that accumulates on top of it: likes, threads, GIFs, replies, and read receipts. If you're building one today, you