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Learning Roadmap

Key Topics to Master

A structured breakdown of FastAPI concepts organised by difficulty

FastAPI Basics

6 key concepts to master

Path & query parameters

Essential

Request body with Pydantic

Essential

Response models

Essential

Status codes & HTTPException

Important

Background tasks

Important

Middleware

Advanced
Difficulty Levels:
EssentialMust know
ImportantHighly recommended
AdvancedFor deeper understanding

Pydantic

6 key concepts to master

BaseModel & field types

Essential

Field validators

Essential

Model validators

Important

Nested models

Important

Settings management

Important

Custom serializers

Advanced
Difficulty Levels:
EssentialMust know
ImportantHighly recommended
AdvancedFor deeper understanding

Dependency Injection

6 key concepts to master

Depends() basics

Essential

Reusable dependencies

Essential

Dependency scopes

Important

Dependency overrides (testing)

Important

Class-based dependencies

Advanced

Async dependencies

Advanced
Difficulty Levels:
EssentialMust know
ImportantHighly recommended
AdvancedFor deeper understanding

Auth & Security

6 key concepts to master

OAuth2 with Password flow

Essential

JWT token creation & validation

Essential

Secure password hashing

Essential

Role-based access control

Important

API key authentication

Important

CORS & trusted origins

Important
Difficulty Levels:
EssentialMust know
ImportantHighly recommended
AdvancedFor deeper understanding

Database (SQLAlchemy)

6 key concepts to master

Async SQLAlchemy setup

Essential

Models & relationships

Essential

Alembic migrations

Essential

CRUD operations

Essential

Session management

Important

Query optimization

Advanced
Difficulty Levels:
EssentialMust know
ImportantHighly recommended
AdvancedFor deeper understanding

Async & Background

6 key concepts to master

async / await in FastAPI

Essential

Celery task setup

Important

Redis as message broker

Important

WebSockets

Important

Task retries & error handling

Advanced

Celery beat (periodic tasks)

Advanced
Difficulty Levels:
EssentialMust know
ImportantHighly recommended
AdvancedFor deeper understanding

Docker & Deployment

6 key concepts to master

Dockerfile for FastAPI

Essential

Docker Compose with services

Essential

Nginx reverse proxy

Important

Environment variable management

Important

Health checks & logging

Important

CI/CD basics

Advanced
Difficulty Levels:
EssentialMust know
ImportantHighly recommended
AdvancedFor deeper understanding

Testing

6 key concepts to master

TestClient setup

Essential

pytest fixtures

Essential

Mocking dependencies

Important

Async test cases

Important

Testing authenticated routes

Important

Coverage reporting

Advanced
Difficulty Levels:
EssentialMust know
ImportantHighly recommended
AdvancedFor deeper understanding