django-graceful-session-cleanup A simple management command that can delete expired sessions from large session tables without killing ...
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management Django Session session cleaner management command

django-graceful-session-cleanup Description

django-graceful-session-cleanup is a simple management command that can delete expired sessions from large session tables without killing the site.The main use case is if you have a live application with millions of stale sessions in the database. Runnung the regular python manage.py cleanup will potentially lock your database for hours, essentially killing your site.With django-graceful-session-cleanup you can gradually delete all the sessions.To achieve this it will always only delete a small amount of the expired sessions per query and then sleep for a few seconds. There are commandline options to control interval, sleep time and amount of sessions to delete per interval.Installationinstall the package:pip install django-graceful-session-cleanupadd it to INSTALLED_APPS:INSTALLED_APPS = run the management command:python manage.py graceful_session_cleanupThere are a few options you can use:python manage.py graceful_session_cleanup --sleep-seconds 9 --delete-count 1000 --iteration-count 200This will delete 1000 expired session entries, wait for 5 seconds so other processes can use the database and then repeat this 200 times. Depending on database load (assuming deleting takes 1s) this will take (9s + 1s) * 200 = 2000s.there is help on the commandline: python manage.py help graceful_session_cleanupUsage: django graceful_session_cleanup Can be run as a cronjob or directly to clean out old data from the database (only expired sessions at the moment). Does this in a live db friendly way by never hogging the connection too long.Options: -v VERBOSITY, --verbosity=VERBOSITY Verbosity level; 0=minimal output, 1=normal output, 2=all output --settings=SETTINGS The Python path to a settings module, e.g. "myproject.settings.main". If this isn't provided, the DJANGO_SETTINGS_MODULE environment variable will be used. --pythonpath=PYTHONPATH A directory to add to the Python path, e.g. "/home/djangoprojects/myproject". --traceback Print traceback on exception -s SLEEP_SECONDS, --sleep-seconds=SLEEP_SECONDS How long to sleep between each delete operation. -c DELETE_COUNT, --delete-count=DELETE_COUNT How many expired sessions to delete per iteration. -i ITERATION_COUNT, --iteration-count=ITERATION_COUNT How many iterations to run. --version show program's version number and exit -h, --help show this help message and exitProduct's homepage

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