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[HttpFoundation] Clarify behavior of session access via RequestStack to avoid auto-starting sessions #20891

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[HttpFoundation] Clarify behavior of session access via RequestStack to avoid auto-starting sessions #20891

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5 changes: 0 additions & 5 deletions session.rst
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Expand Up @@ -107,11 +107,6 @@ By default, session attributes are key-value pairs managed with the
:class:`Symfony\\Component\\HttpFoundation\\Session\\Attribute\\AttributeBag`
class.

Sessions are automatically started whenever you read, write or even check for
the existence of data in the session. This may hurt your application performance
because all users will receive a session cookie. In order to prevent starting
sessions for anonymous users, you must *completely* avoid accessing the session.

.. note::

Sessions will also be started when using features that rely on them internally,
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