Further questions:

• Async in FastAPI
• Read about deployment section of async of fastapi doc

Python asyncio, threading, and processing are all concurrent, not parallel

Concurrency vs Parallelism

Asyncio vs threading

asyncio:

• provides asynchronous I/O
• In general, to make API calls faster, use asyncio.
• efficient network I/O
• When an I/O operation is initiated, the program registers a callback function to be called when the operation is complete, and then returns control to the event loop. The event loop then monitors the state of the I/O operation and calls the appropriate callback function when the operation is complete.

threading: