fastest way to persist changes <p>in my web app the database has a blob(an xml file). The user is allowed to change the blob through a web interface. I take the blob show it in a html form, then the user can change some values and save it back. So the user submit request has a db save. Can I save the entry to a cache to speed up the submit request? But then there is a chance of loosing the changes? What is the fastest way to persist the blob in db?</p>