django As a background operation and maintenance , Sometimes it may involve multi process concurrency , This is the time django Multiple programs will be opened and consistent with the process pool subprogram
In my views.py Add a function to a function module , Then call the following code
from multiprocessing import Pool
import time,datetime,os
def sayhi():
print(f' The current operating system ID：{
os.getpid()}')
time.sleep(10)
views.py A design call to a web page
pool = multiprocessing.Pool(5)
for i in range(50):
pool.apply_async(sayhi,args=())
pool.close()
pool.join()
Click on our page to see django increase 5 A process
(python38) [[email protected] django-restframework-test-master]# ps -ef|grep python|grep virtual
root 1621 1487 4 20:03 pts/0 00:00:10 /virtualenv/python38/bin/python manage.py runserver 192.168.56.150:8000
root 1786 1621 0 20:07 pts/0 00:00:00 /virtualenv/python38/bin/python manage.py runserver 192.168.56.150:8000
root 1787 1621 0 20:07 pts/0 00:00:00 /virtualenv/python38/bin/python manage.py runserver 192.168.56.150:8000
root 1788 1621 0 20:07 pts/0 00:00:00 /virtualenv/python38/bin/python manage.py runserver 192.168.56.150:8000
root 1789 1621 0 20:07 pts/0 00:00:00 /virtualenv/python38/bin/python manage.py runserver 192.168.56.150:8000
root 1790 1621 0 20:07 pts/0 00:00:00 /virtualenv/python38/bin/python manage.py runserver 192.168.56.150:8000
The current operating system ID：1921
The current operating system ID：1922
The current operating system ID：1923
The current operating system ID：1924
The current operating system ID：1925
The current operating system ID：1921
The current operating system ID：1925
The current operating system ID：1922
The current operating system ID：1923
The current operating system ID：1924
The current operating system ID：1922
The current operating system ID：1921
The current operating system ID：1925
The current operating system ID：1923
The current operating system ID：1924
The current operating system ID：1921
The current operating system ID：1923
The current operating system ID：1924
The current operating system ID：1922
The current operating system ID：1925
The current operating system ID：1923
The current operating system ID：1925
The current operating system ID：1922
The current operating system ID：1921
The current operating system ID：1924
The current operating system ID：1921
The current operating system ID：1924
The current operating system ID：1925
The current operating system ID：1922
The current operating system ID：1923
The current operating system ID：1924
The current operating system ID：1925
The current operating system ID：1922
The current operating system ID：1921
The current operating system ID：1923
The current operating system ID：1924
The current operating system ID：1922
The current operating system ID：1925
The current operating system ID：1921
The current operating system ID：1923
The current operating system ID：1924
The current operating system ID：1922
The current operating system ID：1921
The current operating system ID：1923
The current operating system ID：1925
The current operating system ID：1922
The current operating system ID：1925
The current operating system ID：1924
The current operating system ID：1923
The current operating system ID：1921
sayhi This function is also 5 A process ID alternate , Verification is OK
