Fan Out
Everything on SkillVeris tagged Fan Out — collected across the glossary, study notes, blog, and cheat sheets.
5 resources across 1 library
Interview Questions(5)
How Would You Design a Twitter-Style News Feed?
A Twitter-style news feed is built with a fan-out architecture that precomputes each follower’s timeline on write for most users, falls back to a fan-out-on-re…
How Would You Design Instagram?
Instagram is designed around three separable concerns — durable object storage for photos and videos behind a CDN, a metadata service backed by a sharded datab…
How Would You Design a Notification System?
A notification system is designed as an event-driven pipeline where upstream services publish notification events to a queue, a set of channel-specific workers…
How Do You Design a Social Media Timeline?
A social media timeline is built with a hybrid fan-out approach: posts from most users are pushed into each follower’s precomputed feed at write time (fan-out-…
Fan-Out on Write vs Fan-Out on Read: Which Should You Use?
Fan-out on write pre-computes each follower’s feed the instant content is created, pushing a copy into every follower’s inbox so reads are cheap and instant, w…