FULL STACK CITY

Level 1 · Trains sent to the right platform

The Router Station

Routing & request handling. Playable now: read the briefing, practice in the browser, then clear the checkpoint.

Start your first shift

Byte

“Every train has a platform. Send it to the right one.”

Send every request to the right platform

Routes, path parameters with types, query parameters with defaults, and why route order matters.

  • Briefing, about 6 minutes with quick checks · read it as a guide
  • Platform Paths (practice): Write a route with a typed path parameter so each train finds its platform.
  • Query Filters (practice): Read optional query parameters with defaults to filter the departures board.
  • Route Dispatcher (checkpoint): Several routes at once: fixed paths, typed IDs, filters, and the right order.