FastAPI Handbook

01The volumes

1. 

   Volume 1 · 20 pages

   Core FastAPI & Pydantic

   ASGI and Starlette, routing, path, query and body parameters, responses and response models, Pydantic v2 models, validation and a tested mini app.

   …Sample pages
2. 

   Volume 2 · 20 pages

   Dependencies, Middleware, Errors & Auth

   Depends and yield dependencies, overrides, middleware and CORS, error handling, OAuth2, JWT, password security, RBAC and API keys.

   …Sample pages
3. 

   Volume 3 · 23 pages

   API Design, Async & Databases

   Pagination, idempotency, long jobs, uploads, streaming, WebSockets, lifespan, async and blocking calls, SQLAlchemy 2, transactions and N+1.

   …Sample pages
4. 

   Volume 4 · 23 pages

   Queues, Security, OpenAPI & Testing

   Redis and caching, Celery, queues and the outbox, rate limiting, input security, CSRF, OpenAPI, and unit, integration and contract testing.

   …Sample pages
5. 

   Volume 5 · 21 pages

   Performance, Observability & Production

   Profiling and the event loop, logging, metrics, health checks, graceful shutdown, config, Docker, CI/CD, Alembic, scaling and multi-tenancy.

   …Sample pages
6. 

   Volume 6 · 28 pages

   Architecture, Systems & Interviews

   Service layer, DDD, distributed systems, reliability patterns, webhooks, payments, anti-patterns, code review, case studies and senior interview questions.

   …Sample pages

02What is inside

03Around it

• System Design HandbookHLD, LLD, case studies and interview prep, end to end — seven volumes, 170 pages.
• AWS Production HandbookRunning real workloads on AWS — one page per service, plus a second volume on EKS, events, identity, data and AI.
• Python HandbookPure Python from core language and OOP to internals, concurrency, data and AI — four volumes for freshers to 5-year engineers.
• AI Full-Stack HandbookML foundations, LLMs and RAG, agents, inference, evaluation, security, MLOps and AI system design — seven volumes, 153 pages.
• Django HandbookDjango from request lifecycle to production architecture — ORM and PostgreSQL, auth and DRF, async and Celery, operations, design and interviews. Six volumes, 143 pages, every snippet executed.

?Questions

Before you start

What exactly do I get?

Access to the handbook in your library: every page, readable in the browser and printable as PDF. You pay once; there is no subscription.

Can I read before I buy?

Yes. Every volume has free sample pages. Sign in with a free account, open any volume, and the first pages are yours to read.

Will I get updates?

Yes. When a volume is revised, or a new volume is added to a handbook you own, it appears in your library at no cost.

How do I pay?

UPI, cards and netbanking through Razorpay. You enter an email; sign in with it to read.

Refunds?

Digital goods are not refundable once the full book is opened. If a file is broken or not as described, write to us within 7 days and we will fix it or refund you.