On Friday 16 September 2016 08:41:11 hkahlouche wrote:
> ‚Äč>> AFAIK, 2 different requests are served separately, meaning you can have
> >> some requests sent when some other is being responded to.
> >>
> >> If you talk about the same request, then it is only sent to the next
> >> upstream server when there is an 'unsuccessful attempt' at communicating
> >> with the current upstream server. What defines this is told by the
> >> *_next_upstream directives of the pertinent modules (for example
> >> proxy_next_upstream
> >>
> 
<http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_next_upstream>
> >> ).
> >> That means that, by nature, there is no response coming back when the
> >> request is tried on the next server.
> >>
> I am talking about how two successive requests (from client side) are
> handled on a same already established keepalive socket towards upstream
> server: On that same socket and towards the same upstream server, is it
> possible that the nginx upstream module starts sending the subsequent
> request before the current one is completely done (by done I mean the
> complete Content-Length is transferred to the client side)?
> 

No, it's not possible.

As already were said twice, nginx dosn't support pipelining on the upstream 
side.

  wbr, Valentin V. Bartenev

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