[whatwg] Latest proposal for offline web app API
Maciej Stachowiak
mjs at apple.com
Sun Sep 23 18:38:45 PDT 2007
On Sep 23, 2007, at 5:41 PM, Robert O'Callahan wrote:
> On 9/21/07, Ian Hickson <ian at hixie.ch> wrote:
> Provide methods and/or properties for the following:
>
> * Add a resource to the cache. The resource persists (it's a
> permanent addition to the manifest.)
>
> So if an update retrieves a new version of the manifest from the
> server, what will happen to dynamically added resources?
I think Ian's proposal clarified that dynamically added resources
would remain after a manifest update (though of course, you can remove
them through script).
> Nondeterminism about which cache might be used to serve a given URI
> seems highly undesirable to me. This could easily lead to
> interoperability problems.
I believe the only nondeterminism is for top-level resources that
appear in more than one cache. An alternate possibility is to require
that they be served from the most recently updated cache. However, the
counter-argument might be that operations like "open image in new
window" should pass the cache along to the resulting new top-level
browsing context. Perhaps it should be required that the newest
available offline cache is used, except optionally in such cases. I'm
not sure how that could be well-defined however.
Regards,
Maciej
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