Book 1 · Lesson 1.12 · recap

Book 1 capstone — Hello Axum webhook

Prerequisites: 1.1 · 1.5 · 1.11

You finished Book 1 — Runtimes & Languages. This capstone ties the browser loop to the Rust pipeline.

Rubric (self-grade)

Criterion	Pass?
Explain A/D/C/B event loop order
Name WASM boundary vs JS heap
Ownership move vs borrow in one sentence
Send/Sync or channel for cross-task data
Trace webhook: HTTP → Kafka → async pipeline

Step through RequestTimeline while narrating — the curl client gets 200 before enrichment finishes.

Book 2 opens on Kafka topics — you already published to raw-dev-events in the lab.

In one paragraph: why is radar SolidJS but ingestion is Rust?

Start stack: pnpm millipede-demo (or docker compose up).
curl -X POST http://localhost:8081/webhooks/hello -H 'Content-Type: application/json' -d '{"source":"github"}'
Confirm accepted:true in JSON.
Step RequestTimeline while narrating async pipeline.

1. HTTP 200 from ingestion means… LLM finished Webhook accepted; pipeline may still run Radar polled metrics Postgres migrated

2. Book 1 covered both… Only Python JS runtime + Rust/Tokio + Solid/TanStack Only Kafka Only Cloudflare