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Re: XMLHttpRequest Priority Proposal

From: Mike Belshe <mbelshe@google.com>
Date: Tue, 3 Aug 2010 08:19:17 -0700
Message-ID: <AANLkTin6NQJZbu=LKtpOLR_8ihSTGvhCPjQfTq0tj3hW@mail.gmail.com>
To: Anne van Kesteren <annevk@opera.com>
Cc: timeless <timeless@gmail.com>, public-webapps@w3.org
On Tue, Aug 3, 2010 at 5:45 AM, Anne van Kesteren <annevk@opera.com> wrote:

> On Thu, 03 Jun 2010 17:37:05 +0200, Mike Belshe <mbelshe@google.com>
> wrote:
>> Here is an updated doc:
>> https://docs.google.com/a/google.com/document/pub?id=1TcKtHi-XUVKXj9erQkkBXdidnG78lhK04D-2lh4O51Y
> Can you make this publicly available? Now it requires a google.comaccount.

Sorry about that.  I've given up on google docs.  I have no idea how to
effectively share documents from it.  I've moved the specification to here



> Should this also throw an INVALID_STATE_ERR exception just like timeout and
> withCredentials do? See
> http://dev.w3.org/2006/webapi/XMLHttpRequest-2/#the-timeout-attribute
> for details on those attributes.


> What prompted me to look at this again was a bug in WebKit I was added to.
> I briefly looked through the patch there but the networking layer was doing
> nothing at all with the field. (Well, it was not changed by this patch.) Is
> this really something that is useful prior to the deployment of SPDY? And
> are we sure SPDY is going to use something like this and that it will be
> useful then?

The Google Maps team has used this technique quite effectively, seeing some
pages reduce latency by ~70%.  They have to fully schedule all resources
manually, however, as they get no help from the browser today.

> I suppose we can always remove the property later, but it seems rather
> experimental at this stage, so I am not sure whether I should add it.

I think it gives developers a good way to manage complex applications, and
it is pretty simple.


> --
> Anne van Kesteren
> http://annevankesteren.nl/
Received on Tuesday, 3 August 2010 15:19:54 UTC

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