It uses gunicorn as server with uvicorn as workers. See the explanation from fastapi on gunicorn.
See app.yaml
entrypoint: gunicorn -b :$PORT -w 2 -k uvicorn.workers.UvicornWorker main:app
You can deploy this in GCP, similar to the one with flask backend rflask.
Deploy result.
"Hello, world from reactpy on fastapi backend."
app.yaml
# Uses gunicorn with uvicorn workers.
runtime: python
# F1 = 2 workers (default), F2 = 4 workers
instance_class: F1
env: flex
# -w 2 sets uvicorn number of workers
# The number of workers you specify should match the
# instance class of your App Engine app.
entrypoint: gunicorn -b :$PORT -w 2 -k uvicorn.workers.UvicornWorker main:app
runtime_config:
operating_system: "ubuntu22"
runtime_version: "3.11"main.py
from reactpy import component, html
from reactpy.backend.fastapi import configure
from fastapi import FastAPI
@component
def HelloWorld():
return html.h1("Hello, world from reactpy on fastapi backend.")
app = FastAPI()
configure(app, HelloWorld)requirements.txt
reactpy
fastapi
uvicorn[standard]
gunicorn