Welcome! Log In Create A New Profile

Advanced

Re: Is it possible to send html HEAD early (chunked)?

Martin Grotzke
July 14, 2014 02:36PM
Am 14.07.2014 14:54 schrieb "Maxim Dounin" <mdounin@mdounin.ru>:
>
> By default, nginx just sends what's already available. And for
> SSI, it uses chunked encoding.

I don't understand this. In my understanding SSI (the virtual include
directive) goes downstream (e.g. gets some data from a backend) so that the
backend defines how to respond to nginx. What does it mean that nginx uses
chunked encoding?

> That is, if a html head is
> immediately available in your case, it will be just sent to a
> client.

Does it matter if the html head is pulled into the page via SSI or not?

> There is a caveat though: the above might not happen due to
> buffering in various places. Notably, this includes
> postpone_output and gzip filter. To ensure buffering will not
> happen you should either disable appropriate filters, or use
> flushes. Latter is automatically done on each buffer sent when
> using "proxy_buffering off" ("fastcgi_buffering off" and so on).

Ok. Might this have a negative impact on my backend when there are slow
clients? So that when a client consumes the response very slow my backend
is kept "busy" (delivering the response as slow as the client consumes it)
and cannot just hand off the data / response to nginx?

Thanks && cheers,
Martin

> Flush can be also done explicitly via $r->flush() when when using
> the embedded perl module.
>
> --
> Maxim Dounin
> http://nginx.org/
>
> _______________________________________________
> nginx mailing list
> nginx@nginx.org
> http://mailman.nginx.org/mailman/listinfo/nginx
_______________________________________________
nginx mailing list
nginx@nginx.org
http://mailman.nginx.org/mailman/listinfo/nginx
Subject Author Posted

Is it possible to send html HEAD early (chunked)?

Martin Grotzke July 13, 2014 08:50AM

Re: Is it possible to send html HEAD early (chunked)?

mex July 13, 2014 09:40AM

Re: Is it possible to send html HEAD early (chunked)?

Martin Grotzke July 13, 2014 11:36AM

Re: Is it possible to send html HEAD early (chunked)?

mex July 13, 2014 12:37PM

Re: Is it possible to send html HEAD early (chunked)?

Martin Grotzke July 13, 2014 02:54PM

Re: Is it possible to send html HEAD early (chunked)?

mex July 14, 2014 08:23AM

Re: Is it possible to send html HEAD early (chunked)?

Valentin V. Bartenev July 13, 2014 04:02PM

Re: Is it possible to send html HEAD early (chunked)?

Martin Grotzke July 13, 2014 06:28PM

Re: Is it possible to send html HEAD early (chunked)?

Maxim Dounin July 14, 2014 08:56AM

Re: Is it possible to send html HEAD early (chunked)?

Martin Grotzke July 14, 2014 02:36PM

Re: Is it possible to send html HEAD early (chunked)?

Maxim Dounin July 15, 2014 08:46AM



Sorry, only registered users may post in this forum.

Click here to login

Online Users

Guests: 57
Record Number of Users: 6 on February 13, 2018
Record Number of Guests: 421 on December 02, 2018
Powered by nginx      Powered by FreeBSD      PHP Powered      Powered by MariaDB      ipv6 ready