[Django]-How django work with multi-thread in view.py?

Take a look at Celery, it is a distributed task queue that will handle your situation perfectly. There is a little bit of setup to get everything working but once that is out of the way Celery really easy to work with.

For integration with Django start here: http://docs.celeryproject.org/en/latest/django/index.html

Write a management command to for parseMsg and trigger that using subprocess.popen and return success to user and parseMsg process will run in background. if this kind of operations are more in the application then you should use celery.

This is quiet easy, encapsulate #start a new thread with the code below

from threading import Thread
from datetime import datetime

class ProcessThread(Thread):
    def __init__(self, name):
        Thread.__init__(self)
        self.name = name
        self.started = datetime.now()

    def run(self):
        cache_classroom(openID,arr[1],arr[2],arr[3],arr[4]).start()
        # I added this so you might know how long the process lasted
        # just incase any optimization of your code is needed
        finished = datetime.now()
        duration = (self.start - finished).seconds
        print "%s thread started at %s and finished at %s in "\
              "%s seconds" % (self.name, self.started, finished, duration)

# let us now run start the thread
my_thread = ProcessThread("CacheClassroom")
my_thread.start()