Even bare ASGI app running on uvicorn would be a few times slower comparing to Japronto and also its memory footprint would be significantly higher. So I guess

Even bare ASGI app running on uvicorn would be a few times slower comparing to Japronto and also its memory footprint would be significantly higher. So I guess it depends on your use case. I'd say FastAPI is more for complicated, exposed APIs while Japronto is for small internal microservices when speed is the bottleneck.