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Production Concerns
Background tasks (BackgroundTasks, Celery, ARQ); testing FastAPI apps with TestClient; logging, middleware, exception handlers; deployment with Docker + Uvicorn/Gunicorn + cloud platforms.
Module Content
Background Tasks & Workers
Long-running work that shouldn't block the request. BackgroundTasks for simple, Celery/ARQ for serious. FIND_VIDEO: search 'fastapi background tasks celery arq' — recommended channel: ArjanCodes / Tech with Tim. Aim for 10 min or under.
Recap — BackgroundTasks vs Celery vs ARQ
Three layers of async work: in-process, dedicated workers, async-native. When to use which.
Testing FastAPI Apps
TestClient, fixtures for DB and auth, dependency overrides. The path to a real test suite. FIND_VIDEO: search 'fastapi testing pytest tutorial' — recommended channel: ArjanCodes / Test-Driven.io. Aim for 10 min or under.
Recap — TestClient, Fixtures, Dependency Overrides
The patterns that make FastAPI testing fast and clean: TestClient, test DB fixture, override get_current_user.
Logging, Middleware, Error Handling
The cross-cutting concerns of production: structured logs, request context, custom error responses, middleware patterns. FIND_VIDEO: search 'fastapi middleware exception handler logging' — recommended channel: ArjanCodes. Aim for 10 min or under.
Recap — Structured Logs, Request Context, Exception Handlers
The production observability layer: JSON logs, request IDs, exception handlers, useful middleware.
Deployment — Docker, Gunicorn/Uvicorn, Cloud
From running locally to production: Dockerfile, process manager, cloud platforms. The deployment options that work. FIND_VIDEO: search 'fastapi docker deployment production' — recommended channel: ArjanCodes / Test-Driven.io. Aim for 11 min or under.
Recap — Production Deployment Options
Dockerizing FastAPI, choosing a process manager, and the cloud platforms in 2026.