When is it appropriate to use FastAPI in a project?

FastAPI is suitable for quickly and efficiently creating modern web APIs in Python with minimal effort and high performance. Main use cases include:

• Developing RESTful APIs supporting asynchronous requests.
• Projects where rapid development and ease of maintenance are important.
• When automatic API documentation generation (Swagger/OpenAPI) is required.
• If modern Python with support for type hints for data validation and autocompletion is needed.

FastAPI is well-suited for microservices, prototyping, and projects with high performance requirements.

Example of a simple FastAPI application:

from fastapi import FastAPI

app = FastAPI()

@app.get("/items/{item_id}")
async def read_item(item_id: int):
    return {"item_id": item_id}