フリー問題

問題文

A shipping portal keeps each signed-in user's basket in the memory of the web server that answered the first request. The operator wants to add and remove web servers freely during the day. What has to change first?

選択肢

1. The design must move the session state into a shared external store so that any replacement server can continue the work without holding the local instance memory named in the session documentation.
2. The design must move the static images into a shared common store so that any replacement server can continue the work without holding the local server memory named in the session documentation.
3. The design must move the database credentials into a shared common store so that any replacement server can continue the work without holding the local server memory named in the session documentation.
4. The design must move the program binaries into a shared common store so that any replacement server can continue the work without holding the local server memory named in the session documentation.