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Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

Valentin V. Bartenev
March 19, 2015 10:20AM
On Wednesday 18 March 2015 19:11:18 Mark Mielke wrote:
> Hi Valentin:
>
> Are you talking about the same "push" as I am? HTTP/2, or at least SPDY,
> had the ability to *push* content like CSS in advance of the request,
> pushing content into the browsers cache *before* it needs it.

Yes, about that one.


> I'm not talking about long polling or other technology. I've only read about this
> technology, though. I've never seen it implemented in practice.

The mod_spdy Apaches's module has "server push" implementation for a long time already.
And it can be used with mod_proxy or mod_fastcgi without a problem.

See: https://code.google.com/p/mod-spdy/wiki/OptimizingForSpdy#Using_SPDY_server_push


> And for prioritization, it's about choosing to send more important content before
> less important content.

The prioritization mechanism in SPDY/HTTP2 mostly solves the problem introduced
by multiplexing, i.e. by the new protocol itself. When you have only one pipe then
you should carefully choose what to send first.

It already works pretty good in nginx with SPDY on client side and HTTP or FastCGI
on backends. There's almost no room for improvement.


> I don't think you are correct in terms of future potential here. But, it's very
> likely that you are correct in terms of *current* potential. That is, I think
> this technology is too new for people to understand it and really think about
> how to leverage it. It sounds like you don't even know about it...

Well, do you know that the FastCGI protocol has multiplexing ability since
introduction in 1996? So, nothing new, and I cannot remember any widely used
implementation. The reason is that multiplexing is a very complicated thing
with questionable benefits, especially when we are talking about fast and
persistent connections between web server and application.

At least, this should be well studied at first, since the proper implementation
on the backend side will take lots of programming hours.

As for the future, personally I believe that SCTP has much better potential.

wbr, Valentin V. Bartenev

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Subject Author Posted

Google dumps SPDY in favour of HTTP/2, any plans for nginx?

mex February 10, 2015 06:25PM

Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

Ilya Grigorik February 10, 2015 07:40PM

Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

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alexandru.eftimie March 17, 2015 09:49AM

Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

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Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

Daniƫl Mostertman March 17, 2015 10:02AM

Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

Maxim Dounin March 17, 2015 10:44AM

Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

Mel Pilgrim March 27, 2015 05:34PM

Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

Valentin V. Bartenev March 17, 2015 06:34PM

Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

Rainer Duffner March 17, 2015 06:38PM

Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

alexandru.eftimie March 18, 2015 04:29AM

Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

Mark Mielke March 18, 2015 04:34AM

Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

Valentin V. Bartenev March 18, 2015 10:46AM

Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

Mark Mielke March 18, 2015 07:12PM

Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

Valentin V. Bartenev March 19, 2015 10:20AM

Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

George March 28, 2015 04:27PM

Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

sarahnovotny March 29, 2015 05:26PM

Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

George April 01, 2015 02:39AM

Re: Google dumps SPDY in favour of HTTP/2, any plans for nginx?

sarahnovotny April 01, 2015 06:16PM



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