Alex MacCaw – Asynchronous UIs - the future of web user interfaces:
“Move state & view rendering to the client side.
[…] The idea is that you update the client before you send an Ajax request to the server. For example, say a user updated a page name in a CMS. With an asynchronous UI, the name change would be immediately reflected in the application, without any loading or pending messages. The UI is available for further interaction instantly. The Ajax request specifying the name change would then be sent off separately in the background. At no point does the application depend on the Ajax request for further interaction.”