High performance Fastapi on Windows

pyproject.toml

[tool.poetry]
name = "test"
version = "0.1.0"
description = ""

[tool.poetry.dependencies]
python = "^3.7"
fastapi = {extras = ["all"], version = "^0.52.0"}
uvicorn = "^0.11.5"
orjson = "^3.2.2"

[build-system]
requires = ["poetry>=0.12"]
build-backend = "poetry.masonry.api"

uvicorn-windows.py

from fastapi import FastAPI
from fastapi.responses import ORJSONResponse

app = FastAPI(
    default_response_class=ORJSONResponse
)

@app.get("/")
def root():
    return {"message": "Hello World"}


app.on_event('startup')(lambda: print('startup'))
app.on_event('shutdown')(lambda: print('shutdown'))

if __name__ == "__main__":
    from asyncio import ProactorEventLoop, set_event_loop, get_event_loop
    from uvicorn import Config, Server
    set_event_loop(ProactorEventLoop())
    server = Server(config=Config(app=app))
    get_event_loop().run_until_complete(server.serve())