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Build Real APIs
Six end-to-end builds: Notes API with auth + tests; URL shortener (paired with System Design); async webhook handler with retries; paginated search with caching; file-upload service with S3 + signed URLs; deploy FastAPI to production.
Module Content
Build 1 — Notes API (Full CRUD + Auth + Tests)
The reference implementation: users, notes, JWT auth, RBAC, tests, OpenAPI docs. The complete starter project.
Build 2 — URL Shortener Service
The classic. Build the API + redirect endpoint. Pair with the System Design walkthrough.
Build 3 — Async Webhook Handler
Build a webhook receiver that ACKs fast and processes async with retries. Patterns for handling Stripe/GitHub-style integrations.
Build 4 — Paginated Search API with Caching
A search endpoint with cursor pagination, full-text search, and Redis-cached responses.
Build 5 — File-Upload Service (S3 + Signed URLs)
A file-upload service using presigned S3 URLs. Upload directly from browser; backend just authorizes.
Build 6 — Deploy to Production
Take one of the previous builds and ship it: Dockerfile, migrations, env config, deploy to Fly.io/Railway/Render.