3.多线程模拟商品秒杀

from redis_db import  pool
import redis
import random
from concurrent.futures import  ThreadPoolExecutor


s=set()
while True:
    if len(s)==1000:
        break
    num = random.randint(10000,100000)
    s.add(num)
con = redis.Redis(
    connection_pool=pool
)
try:
    con.delete("kill_total","kill_num","kill_flag","kill_user")
    con.set("kill_total",50)
    con.set("kill_num",0)
    con.set("kill_flag",1)
    con.expire("kill_flag",600)
except Exception as e:
    print(e)
finally:
    del con


executor = ThreadPoolExecutor(200)
def buy():
    connection = redis.Redis(
        connection_pool=pool
    )
    pipline = connection.pipeline()
    try:
        if connection.exists("kill_flag")==1:
            pipline.watch("kill_num", "kill_user")
            total = int(pipline.get("kill_total").decode("utf-8"))
            num = int(pipline.get("kill_num").decode("utf-8"))
            if num