About join.dev
join.dev explains how AI systems are designed, one idea at a time: what the parts are, how a request flows through them, how the design fails in production and what fixes it.
Short first
A Short gives you the one idea in under a minute: the villain and the fix, or why a pattern is worth using.
Then the whole design
Deep dives walk the architecture, the request flow, every failure mode, the code and a production checklist.
Written, with sources
Every episode starts as a written design spec. That spec is on the episode page, with the sources and which numbers are illustrative.
No tracking
No cookies, no analytics, no ads, no accounts. Videos load from YouTube's privacy-enhanced player only when you press play.
The series
- AI System Design in 60 Seconds
One failure mode and its fix, or one pattern and why to use it, in under a minute.
- AI System Design in 60 Seconds · Cinematic
The same 60-second format over illustrated scene art, for new AI patterns and core concepts.
- AI System Design Deep Dive
4–10 minute walkthroughs with chapters: architecture, request flow, failure modes, the fix and the code.
- AI System Design Deep Dive · Cinematic
Long-form deep dives with every diagram laid over cinematic scene art.
For developers
Everything on the site is also available as JSON, for apps, widgets or a newsletter:
/api/episodes.jsonevery episode with its track, format, one-liner and cover/api/news.jsonthe news feed/news/feed.xmlRSS 2.0
Also from join.dev
Code Quest Kids: Coding for kids aged 6 to 12, with Bit the robot.