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authorPrem Sichanugrist <s@sikachu.com>2012-08-24 14:26:00 -0400
committerPrem Sichanugrist <s@sikachu.com>2012-08-24 15:24:19 -0400
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Update guide/release note about AR::SessionStore
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@@ -81,9 +81,7 @@ This will also be a good idea, if you modify the structure of an object and old
h4. Session Storage
-NOTE: _Rails provides several storage mechanisms for the session hashes. The most important are +ActiveRecord::SessionStore+ and +ActionDispatch::Session::CookieStore+._
-
-There are a number of session storages, i.e. where Rails saves the session hash and session id. Most real-live applications choose ActiveRecord::SessionStore (or one of its derivatives) over file storage due to performance and maintenance reasons. ActiveRecord::SessionStore keeps the session id and hash in a database table and saves and retrieves the hash on every request.
+NOTE: _Rails provides several storage mechanisms for the session hashes. The most important is +ActionDispatch::Session::CookieStore+._
Rails 2 introduced a new default session storage, CookieStore. CookieStore saves the session hash directly in a cookie on the client-side. The server retrieves the session hash from the cookie and eliminates the need for a session id. That will greatly increase the speed of the application, but it is a controversial storage option and you have to think about the security implications of it: