CHAPTER 01 / 08
Routing and HTTP methods
Create a Python API and define routes and HTTP methods with FastAPI.
Python reference
FastAPI
cheat sheet.
Routes, Pydantic validation, dependencies, database sessions, authentication, testing, and deployment with FastAPI.
28 topics53 code examplesUpdated
How FastAPI fits together
01Request arrivesA client chooses a URL and method.
02Data validatesTypes and Pydantic parse inputs.
03Function runsDependencies supply what it needs.
04Response returnsSchema filters output; JSON leaves.
Jump to a specific topic
Choose a chapter
8 chapters · 28 topics
CHAPTER 02 / 08
Validation, dependencies, and responses
Validate requests, return responses, share dependencies, organize routers, and choose async or sync handlers.
7 topics
CHAPTER 03 / 08
SQLAlchemy and database sessions
Model database records, load relationships, and manage synchronous and asynchronous transactions.
CHAPTER 04 / 08
Authentication and authorization
Add password authentication, bearer tokens, ownership checks, and authorization scopes.
CHAPTER 05 / 08
Testing, middleware, and uploads
Test endpoints and lifecycle behavior, configure middleware, and handle forms and files.
CHAPTER 06 / 08
Lifespan, background tasks, and WebSockets
Manage application resources, background work, streaming connections, OpenAPI, and advanced routes.
CHAPTER 07 / 08
Deployment and performance
Deploy an API with appropriate processes, proxies, database access, and operational safeguards.
CHAPTER 08 / 08
Patterns, pitfalls, and reference
Review API patterns, common mistakes, terminology, and official reference material.