如何利用Python优化网站访问速度，从根源解决性能瓶颈？

import requests
import gevent
from gevent import monkey
monkey.patch_all()

def fetch(url):
    response = requests.get(url)
    print(response.text)

urls = ['https://www.example.com', 'https://www.example2.com', 'https://www.example3.com']

tasks = [gevent.spawn(fetch, url) for url in urls]
gevent.joinall(tasks)

import redis
from flask import Flask, request

app = Flask(__name__)
cache = redis.Redis(host='localhost', port=6379)

@app.route('/')
def index():
    url = request.host_url + request.path
    page_content = cache.get(url)
    if page_content:
        return page_content
    else:
        page_content = 'This is the content of the web page'
        cache.set(url, page_content)
        return page_content

if __name__ == '__main__':
    app.run()

import asyncio
import aiohttp

async def fetch(session, url):
    async with session.get(url) as response:
        return await response.text()

async def main():
    urls = ['https://www.example.com', 'https://www.example2.com', 'https://www.example3.com']
    async with aiohttp.ClientSession() as session:
        tasks = [fetch(session, url) for url in urls]
        results = await asyncio.gather(*tasks)
        for result in results:
            print(result)

if __name__ == '__main__':
    loop = asyncio.get_event_loop()
    loop.run_until_complete(main())

import cProfile
from myapp import app

if __name__ == '__main__':
    with cProfile.Profile() as pr:
        app.run()
    pr.print_stats()