Efficiently clear expired sessions from the database.
By default, Django’s cached_db and db session backends loop through deleted sessions in order to trigger pre/post delete signal handlers. This can be extremely slow and consume a lot of CPU and memory on sites with a lot of sessions.
This package provides a SessionStoreMixin class and alternative cached_db and db backends that use the private _raw_delete() method, which is much faster and consumes much less CPU and memory, but does not trigger pre/post delete signal handlers.
Add to your settings:
SESSION_ENGINE = 'django_raw_clearsessions.cached_db'
SESSION_ENGINE = 'django_raw_clearsessions.db'
# mybackend.py from some.package import some_backend from django_raw_clearsessions import SessionStoreMixin class SessionStore(SessionStoreMixin, some_backend.SessionStore): pass # settings.py SESSION_ENGINE = 'mybackend'
Execute the Django clearsessions management command:
$ python manage.py clearsessions
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