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Fixed #3137 -- Added 'Clearing the session table' section to docs/sessions.txt 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@4268 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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Adrian Holovaty 2006-12-30 07:30:00 +00:00
parent f21cbb40b2
commit fcdbb92918
1 changed files with 17 additions and 0 deletions
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docs/sessions.txt
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@ -217,6 +217,23 @@ browser-length cookies -- cookies that expire as soon as the user closes his or
her browser. Use this if you want people to have to log in every time they open her browser. Use this if you want people to have to log in every time they open
a browser. a browser.
Clearing the session table
==========================
Note that session data can accumulate in the ``django_session`` database table
and Django does *not* provide automatic purging. Therefore, it's your job to
purge expired sessions on a regular basis.
To understand this problem, consider what happens when a user uses a session.
When a user logs in, Django adds a row to the ``django_session`` database
table. Django updates this row each time the session data changes. If the user
logs out manually, Django deletes the row. But if the user does *not* log out,
the row never gets deleted.
Django provides a sample clean-up script in ``django/bin/daily_cleanup.py``.
That script deletes any session in the session table whose ``expire_date`` is
in the past -- but your application may have different requirements.
Settings Settings
======== ========