Are ES6 modules in browsers going to get loaded level-by-level?
glen.84 at gmail.com
Thu Apr 16 21:30:08 UTC 2015
You might find this interesting:
On 2015/04/16 22:43, John Barton wrote:
> On Thu, Apr 16, 2015 at 1:22 PM, Domenic Denicola <d at domenic.me
> <mailto:d at domenic.me>> wrote:
> From: John Barton [mailto:johnjbarton at google.com
> <mailto:johnjbarton at google.com>]
> > But the push scenario in your first paragraph would not use the
> cache either.
> Yeah, that's what I was alluding to with the "most naïve" comment.
> > one or the other has to send its information at the outset of a
> import request, or
> One way of doing this I came up with off the top of my head is to
> add some kind of "dependency graph version" or hash to the query
> string. I.e. <script type="module" src="entry.js?1234"></script>.
> The server can then assume that the client has in its cache
> version 1234 of the dependency graph, and can push the incremental
> updates since then (i.e. added or modified files). If parts of the
> cache were evicted, so that the versioning signal is not entirely
> accurate, then the penalty is not so bad, as you just fall back to
> the normal loading process for the evicted subset.
> But I feel pretty silly speculating here as I'm not an expert on
> HTTP/2 techniques, and there are probably other methods that are
> better in various ways.
> Perhaps, but I feel the issue is more fundamental. HTTP/2 shares
> statelessness with HTTP/1. It follows that the state of the client
> must be sent to the server or vice versa. HTTP/2 can make that
> process much faster but it's not going to know what state to send
> without instructions from clients or from servers. We can all make up
> those instructions one at a time and in our own unique ways or the
> module experts can come up with a good solution for the common cases.
> I'm hoping for the latter ;-)
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