[html5] Offline apps

Jacob Kristensen admin at blueboden.com
Sat Apr 9 18:33:12 PDT 2011

You should be able to simply update the manifest file dynamically on the 
server side, whenever your page or application is updated.

The smallest change should trigger a re-download, which means that even 
changing a comment in the manifest file would make UAs fetch the resources 
It would be nice if there was a way to trigger such re-downloads 
individually, as all files might not be updated. I'm sure some sites or 
applications would find this useful.

It has been suggested to simply include a version number, or whatever, in a 
comment, and increment that when your page/app gets updated, but basically 
anything would work.

You may however also want to consider how many requests this actually saves 
you, compared to using etag and cache headers.

Jacob Kristensen

More information about the Help mailing list