HTTP2 Multiplexing

[Muhui Jiang]

Hi

>Nginx allows multiple request and responses in multiple connections using
>HTTP/1.x as well.  HTTP/2 changes nothing here (except it uses only one
>connection, but it's not important from the basic architecture point of
>view).

If so, it seems there is no difference or improvement of the implementation
on the feature of multiplexing compared with Http/1.1 pipeline.

How do you solve the problem Head-of-line blocking occurred in Http/1.1.

Best Regards
Muhui Jiang


2016-05-04 18:19 GMT+08:00 Valentin V. Bartenev <vbart at nginx.com>:

> On Wednesday 04 May 2016 11:25:11 Muhui Jiang wrote:
> > Hi
> >
> > Different from HTTP1.1 pipeline, HTTP2 allows multiple request and
> response
> > messages to be in flight at the same time. I was wondering what the
> >  strategy  Nginx adopt to implement this main feature.
>
> Nginx allows multiple request and responses in multiple connections using
> HTTP/1.x as well.  HTTP/2 changes nothing here (except it uses only one
> connection, but it's not important from the basic architecture point of
> view).
>
>
> >
> > Is every single stream correspond to a thread. If not, how can Nginx
> > provide multiple parallel requests handling. If you can locate the
> > correspond code for me, that would be great
> >
>
> No, nginx uses asynchronous non-blocking event-driven architecture
> instead of mapping requests into separate threads.
>
> It have used multiplexing of requests handling in single process many
> years before HTTP/2 was invented.
>
> A more detailed explanation can be found here:
>
> https://www.nginx.com/blog/inside-nginx-how-we-designed-for-performance-scale/
>
>   wbr, Valentin V. Bartenev
>
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