2 files changed, 10 insertions, 10 deletions
diff --git a/actionpack/lib/action_dispatch/middleware/session/abstract_store.rb b/actionpack/lib/action_dispatch/middleware/session/abstract_store.rb
index fcc2287279..e9e0c26c73 100644
--- a/actionpack/lib/action_dispatch/middleware/session/abstract_store.rb
+++ b/actionpack/lib/action_dispatch/middleware/session/abstract_store.rb
@@ -88,7 +88,10 @@ module ActionDispatch
         end
 
         def exists?
-          @by.send(:exists?, @env)
+          return @exists if instance_variable_defined?(:@exists)
+          stale_session_check! do
+            @exists = @by.send(:exists?, @env)
+          end
         end
 
         def loaded?
diff --git a/actionpack/lib/action_dispatch/middleware/session/cookie_store.rb b/actionpack/lib/action_dispatch/middleware/session/cookie_store.rb
index 6c1567f470..7ebd532f4a 100644
--- a/actionpack/lib/action_dispatch/middleware/session/cookie_store.rb
+++ b/actionpack/lib/action_dispatch/middleware/session/cookie_store.rb
@@ -62,11 +62,12 @@ module ActionDispatch
         end
 
         def unpacked_cookie_data(env)
-          request = ActionDispatch::Request.new(env)
-          if data = request.cookie_jar.signed[@key]
-            data.stringify_keys!
-          else
-            {}
+          env["action_dispatch.request.unsigned_session_cookie"] ||= begin
+            request = ActionDispatch::Request.new(env)
+            if data = request.cookie_jar.signed[@key]
+              data.stringify_keys!
+            end
+            data || {}
           end
         end
 
@@ -78,10 +79,6 @@ module ActionDispatch
           persistent_session_id!(session_data, sid)
         end
 
-        def exists?(env)
-          ActionDispatch::Request.new(env).cookie_jar.key?(@key)
-        end
-
         def destroy(env)
           # session data is stored on client; nothing to do here
         end