模拟高并发请求服务端（python gevent）

项目背景：对web后端进行高并发的请求，简单测试服务框架的性能
解决思路：利用python的多线程，但python的多线程有点“鸡肋”， 个人选择使用简洁轻便gevent。
解决方案：采用gevent异步 + requests 进行高并发请求

import time
import json
import random
from urllib.error import URLError
from urllib import request
import http.client
import requests
import gevent
from gevent import monkey
# 补丁
monkey.patch_all()


**请求URL**
url = 'http://127.0.0.1:8000/insert'
headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 6.1;WOW64; rv:45.0) Gecko/20100101 Firefox/45.0'
}


def make_data(num):
    """制造请求数据"""
    data = { 
            "id": num,   
            "name": "test" + num,
    }
    return data


def run():
    """三种模拟请求"""
    num = random.randint(100, 999)
    data = make_data(num)
    try:
        # s1:request请求
        req = request.Request(url=url, data=data, headers=headers, method="POST")
        response = request.urlopen(req)
        resp = response.read()
        print("服务器返回值为:\n", resp.decode('utf-8'))
        
        # s2:httpclient请求
        # httpclient = http.client.HTTPConnection(host='127.0.0.1', port=8001)
        # httpclient.request("POST", '/insert', data, headers)
        # response = httpclient.getresponse()
        # print(response.read().decode())

        # s3:requests请求
        # resp = requests.post(url=url, data=data, headers=headers)
        # print("状态:\n", resp)
        # print("请求头:\n", resp.headers)
        # print("服务器返回值为:\n", resp.content.decode())
    except URLError as e:
        print('请求', e)
    except Exception as e:
        print('请求错误：', e)


def call_gevent(count):
    """调用gevent 模拟高并发"""
    begin_time = time.time()
    run_gevent_list = []
    for i in range(count):
        print('--------------%d--Test-------------' % i)
        run_gevent_list.append(gevent.spawn(run()))
    gevent.joinall(run_gevent_list)
    end = time.time()
    print('单次测试时间（平均）s:', (end - begin_time) / count)
    print('累计测试时间 s:', end - begin_time)


if __name__ == '__main__':
    # 10万并发请求
    test_count = 100000
    call_gevent(count=test_count)