async_server.py

import asyncio
from quart import Quart, request

app = Quart(__name__)

@app.route('/', methods=['GET'])
async def sleep():
    await asyncio.sleep(4)
    print("received request")
    return 'Slept for 400ms'

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=8000, debug=True)

curly.sh

#!/bin/bash

echo "At 4 secs each, 5 concurrent reqs should take 20 secs in sync and 4 secs in async"

start_time=$(date +%s)

for i in {1..5}; do
  curl http://0.0.0.0:8000 > /dev/null 2>&1 &
done

wait

end_time=$(date +%s)
elapsed_time=$((end_time - start_time))

echo "Total time: ${elapsed_time} seconds"

sync_server.py

from flask import Flask, request
import time

app = Flask(__name__)

@app.route('/', methods=['GET'])
def sleep():
    time.sleep(4)
    return 'Slept for 4000ms'

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=8000, debug=True)