How to concurrently send thousands of requests in python

There are many ways to implement concurrency thousands of requests in python. The following are some commonly used methods:

1. Using Multi-threading: You can use the threading module to create and manage multiple threads to send requests concurrently. Each thread can be responsible for sending a request. You can use Thread Pool to manage and control the number of threads.

import threading
import requests

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

urls = [...]# 存储要发送请求的URL列表

threads = []
for url in urls:
thread = threading.Thread(target=send_request, args=(url,))
thread.start()
threads.append(thread)

for thread in threads:
thread.join()

2. Use coroutines: You can use the async<strong class="keylink">io</strong> module and the <strong class="keylink">ai</strong>o<strong class="keylink">Http</strong> library to achieve concurrency ask. A coroutine is a lightweight thread that can achieve concurrency in a single thread. By using the async and await keywords, you can create asynchronous functions to execute requests concurrently.

import asyncio
import aiohttp

async def send_request(url):
async with aiohttp.ClientSession() as session:
async with session.get(url) as response:
data = await response.text()
print(data)

urls = [...]# 存储要发送请求的URL列表

loop = asyncio.get_event_loop()
tasks = [send_request(url) for url in urls]
loop.run_until_complete(asyncio.wait(tasks))
loop.close()

3. Use concurrency library: You can use some third-party concurrency libraries, such as grequests or gevent, to implement concurrent requests. These libraries can execute multiple requests concurrently in a single thread.

Example using grequests library:

import grequests

urls = [...]# 存储要发送请求的URL列表

requests = [grequests.get(url) for url in urls]
responses = grequests.map(requests)

for response in responses:
print(response.text)

Example using gevent library:

import gevent
import requests

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

urls = [...]# 存储要发送请求的URL列表

greenlets = [gevent.spawn(send_request, url) for url in urls]
gevent.joinall(greenlets)

No matter which method you choose, be careful to control the number of concurrent requests to avoid excessive resource consumption or server overloading.

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