如何获取大量子域的响应状态？

Question

我一直在尝试一次检查所有这些子域的状态，并且尝试了多种技术，甚至 grequests 和比 requests 更快的技术也没有多大帮助，然后我开始将 asyncio 与 aiohttp 一起使用，它现在比正常的 requests 库慢。我还检查了它实际上并不是异步发送请求，而是一个接一个地发送请求。

我知道“await resp.status”有问题，因为 resp.status 不支持等待，但我尝试删除它，但它仍然是一样的。

import aiohttp
import asyncio
import time

start_time = time.time()


async def main():
#List of 1000 subdomains , Some subdomains do not exist 

    data = [ "LIST OF 1000 SUBDOMAINS" ]

    async with aiohttp.ClientSession() as session:
        for url in data:
            pokemon_url = f'{url}'
            try:
                async with session.get(pokemon_url, ssl=False) as resp:
                    pokemon = await resp.status
               #If subdomain exists then print the status
                    print(pokemon)
            except:
               #else print the subdomain which does not exist or cannot be reached

                print(url)

asyncio.run(main())
print("--- %s seconds ---" % (time.time() - start_time))

Answer 1

我尝试了多种技术，甚至请求

grequests 对此也能很好地工作，如果您不想，则不必使用异步。

import grequests
import time

urls = ['https://httpbin.org/delay/4' for _ in range(4)]
# each of these requests take 4 seconds to complete
# serially, these would take at least 16 (4 * 4) seconds to complete

reqs = [grequests.get(url) for url in urls]
start = time.time()
for resp in grequests.imap(reqs, size=4):
    print(resp.status_code)
end = time.time()
print('finished in', round(end-start, 2), 'seconds')

200
200
200
200
finished in 4.32 seconds