/fundamentals/what-is-system-design
The public lesson combines structured teaching, diagrams, a quiz, and an optional AI panel. The walk reads into the lesson and opens that panel without claiming a model answer it did not request.
Captured from the public production URL. The deployment does not expose a source commit, so this evidence is intentionally not pinned to the local checkout's HEAD.
Opened the public system-design lesson.
The page starts with the forces a design must balance and exposes the wider curriculum in its navigation.
Scrolled to "A simple read path with deliberate boundaries".
The lesson moves from definitions to a concrete client, load balancer, service, cache, primary store, and replica path.
Opened the "Ask AI" panel.
The question composer is visible, but this bounded walk does not submit a prompt or claim an answer it did not observe.
