docs: Deleting expired session files

Author: neznaika0

user_guide_src/source/libraries/sessions.rst

@@ -552,6 +552,22 @@ Instead, you should do something like this, depending on your environment:
     chmod 0700 /<path to your application directory>/writable/sessions/
     chown www-data /<path to your application directory>/writable/sessions/
 
+Deleting Expired Session Files
+------------------------------
+
+The built-in handlers do not have the function of deleting expired sessions. You need to set it up yourself.
+You need to set up a **cron** task, for example:
+
+.. code-block:: console
+
+    0 2 * * * find /path/to/your/project/writable/session -type f -name 'ci_session*' -mmin +1440 -delete
+
+It will delete stale sessions that haven’t been used for more than 24 hours.
+
+    - The session path should be set to: ``Config\Session::$savePath``.
+    - The session name should be set to: ``Config\Session::$cookieName``
+    - The user running the cron job should have permission to access and delete those session files.
+
 Bonus Tip
 ---------