The FastAPI Textbook on Manvendra Rajpoot https://blog.rajpoot.dev/textbooks/fastapi/ Recent content in The FastAPI Textbook on Manvendra Rajpoot Manvendra Rajpoot https://blog.rajpoot.dev/img/personal/cover.png https://blog.rajpoot.dev/img/personal/cover.png Hugo en Manvendra Rajpoot FastAPI Textbook Ch. 1 — Introduction, Architecture, and the ASGI Foundation https://blog.rajpoot.dev/textbooks/fastapi/01-introduction-and-architecture/ Wed, 06 May 2026 06:00:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/01-introduction-and-architecture/ Chapter 1 of the FastAPI textbook — what FastAPI is, the ASGI foundation, Starlette underneath, and how the pieces fit. FastAPI Textbook Ch. 2 — Routing, Path Operations, and the Request Anatomy https://blog.rajpoot.dev/textbooks/fastapi/02-routing-and-request-anatomy/ Wed, 06 May 2026 06:10:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/02-routing-and-request-anatomy/ Chapter 2 — FastAPI routing in depth: path operations, parameter sources, routers, mounts, and the request lifecycle. FastAPI Textbook Ch. 3 — Pydantic Models and Request Validation https://blog.rajpoot.dev/textbooks/fastapi/03-pydantic-models-validation/ Wed, 06 May 2026 06:20:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/03-pydantic-models-validation/ Chapter 3 — Pydantic for FastAPI: input models, validators, types, custom errors, and how request bodies become typed Python objects. FastAPI Textbook Ch. 4 — Response Models, Serialization, and Output Discipline https://blog.rajpoot.dev/textbooks/fastapi/04-response-models-serialization/ Wed, 06 May 2026 06:30:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/04-response-models-serialization/ Chapter 4 — Response models in FastAPI: response_model, exclusion, computed fields, custom encoders, and output discipline. FastAPI Textbook Ch. 5 — Dependency Injection in Depth https://blog.rajpoot.dev/textbooks/fastapi/05-dependency-injection/ Wed, 06 May 2026 06:40:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/05-dependency-injection/ Chapter 5 — FastAPI dependency injection: Depends, sub-dependencies, scopes, lifecycle, overrides, class deps, security deps, sync vs async. FastAPI Textbook Ch. 6 — Authentication and Authorization https://blog.rajpoot.dev/textbooks/fastapi/06-authentication-authorization/ Wed, 06 May 2026 06:50:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/06-authentication-authorization/ Chapter 6 — FastAPI auth: OAuth2 password / bearer / OIDC, sessions, API keys, role-based access, and the production patterns. FastAPI Textbook Ch. 7 — Async, Concurrency, and the Threadpool https://blog.rajpoot.dev/textbooks/fastapi/07-async-concurrency/ Wed, 06 May 2026 07:00:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/07-async-concurrency/ Chapter 7 — Async in FastAPI: event loop, threadpool, blocking traps, AnyIO, TaskGroup, and concurrency patterns. FastAPI Textbook Ch. 8 — WebSockets, SSE, and Streaming Responses https://blog.rajpoot.dev/textbooks/fastapi/08-websockets-sse-streaming/ Wed, 06 May 2026 07:10:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/08-websockets-sse-streaming/ Chapter 8 — Real-time in FastAPI: WebSockets, Server-Sent Events, streaming responses, NDJSON, and client patterns. FastAPI Textbook Ch. 9 — Background Tasks and Task Queues https://blog.rajpoot.dev/textbooks/fastapi/09-background-tasks/ Wed, 06 May 2026 07:20:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/09-background-tasks/ Chapter 9 — Background work in FastAPI: BackgroundTasks, ARQ, Celery, Dramatiq, and patterns for reliable post-response work. FastAPI Textbook Ch. 10 — Testing FastAPI: Pytest, AnyIO, and Real DBs https://blog.rajpoot.dev/textbooks/fastapi/10-testing/ Wed, 06 May 2026 07:30:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/10-testing/ Chapter 10 — Testing FastAPI: TestClient, AsyncClient, dependency overrides, real DB tests, fixtures, and CI patterns. FastAPI Textbook Ch. 11 — Observability: Logging, Tracing, and Metrics https://blog.rajpoot.dev/textbooks/fastapi/11-observability/ Wed, 06 May 2026 07:40:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/11-observability/ Chapter 11 — Observability for FastAPI: structured logging with structlog, OpenTelemetry tracing, Prometheus metrics, and correlation. FastAPI Textbook Ch. 12 — Deployment, Scaling, and Production https://blog.rajpoot.dev/textbooks/fastapi/12-deployment-production/ Wed, 06 May 2026 07:50:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/12-deployment-production/ Chapter 12 — Production FastAPI: ASGI servers, Docker, K8s, autoscaling, graceful shutdown, and the production checklist.