FastAPI Cheatsheet 04 — Dependency Injection
Cheatsheet: Depends, yield-deps, sub-deps, class deps, security deps, dependency_overrides for tests, lifespan.
FastAPI
FastAPI Textbook Ch. 4 — Response Models, Serialization, and Output Discipline
Output side of FastAPI: response_model, response shaping, custom encoders, status codes, response classes (JSON, HTML, Streaming, File).
Integration Cheatsheet 05 — Auth Stack (Password / JWT / Session)
Cheatsheet: full auth stack — User model, login endpoint, token deps, refresh, password hashing.
FastAPI Cheatsheet 05 — Authentication and Authorization
Cheatsheet: argon2 hashing, OAuth2 password flow, refresh tokens, sessions, API keys, scopes, RBAC, resource-level authz.
FastAPI Textbook Ch. 5 — Dependency Injection in Depth
Dependency injection in FastAPI: Depends, scopes, sub-deps, class-based deps, lifecycle (startup/shutdown), and the patterns from production.
Integration Cheatsheet 06 — Multi-Tenancy Across the Stack
Cheatsheet: tenant context, RLS policies, per-request session, isolation tests.
FastAPI Cheatsheet 06 — Async, Concurrency, and the Threadpool
Cheatsheet: async def vs def, AnyIO/TaskGroup, to_thread, blocking traps, semaphores, timeouts, cancellation.
FastAPI Textbook Ch. 6 — Authentication and Authorization
Auth and authz in FastAPI: passwords, JWT, OAuth2 / OIDC, sessions, passkeys, RBAC, scopes, and security best practices.
Integration Cheatsheet 07 — Background Jobs Across the Stack
Cheatsheet: enqueue from request, worker with DB session, outbox + LISTEN/NOTIFY wake-up.
FastAPI Cheatsheet 07 — WebSockets and SSE
Cheatsheet: WebSocket handlers, auth patterns, broadcast (single + multi-process), SSE, NDJSON, heartbeats.