- From: Ian Hickson <ian@hixie.ch>
- Date: Mon, 9 Aug 2010 02:48:35 +0000 (UTC)
On Thu, 10 Jun 2010, Eric Schurman wrote: > > As described, the link prefetching capability seems to have some > limitations that work counter to the performance of the page using it. > > It appears as though LINK elements are metadata elements and that these > may only be supported inside the HEAD of the document. If so, then this > is an issue in the real world, because at the time a web server flushes > chunks containing the HEAD section of a document, the links we would > want to prefetch are often not known. This is true for all the large > sites I've analyzed or worked at. For example, many pages on a site will > contain the same visual header, and we want to flush the HEAD and visual > header content while the server is in the process of figuring out what > the content of the page will be - which will contain the links we'd like > to prefetch. > > Am I reading this correctly? This was indeed a limitation of the prefetch mechanism. > One of the simplest approaches may be to add support for rel="prefetch" > to A and AREA's, but it's been explicitly excluded from those. Why? No good reason. Fixed. -- Ian Hickson U+1047E )\._.,--....,'``. fL http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,. Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
Received on Sunday, 8 August 2010 19:48:35 UTC