Serve multiple requests from a single proxy request

[traquila]

Thank you for your answer.
This means nginx is not compatible with CMAF and low latency streaming.

I tried the slice module and read its code but it does not cover my needs.
I guess I have to develop a new proxy module.

thanks
Traquila


Roman Arutyunyan Wrote:
-------------------------------------------------------
> Hi,
> 
> On Fri, Aug 31, 2018 at 05:02:21AM -0400, traquila wrote:
> > Hello,
> > I'm wondering if nginx is able to serve multiple requests from a
> single
> > proxy request before it completes.
> > 
> > I am using the following configuration:
> > 
> >     proxy_cache_lock on;
> >     proxy_cache_lock_timeout 5s;
> >     proxy_cache ram;
> >     proxy_pass myUpstream;
> > 
> > My upstream uses chunked transfer encoding and serve the request in
> 10 sec.
> > Now if I try to send 2 requests to nginx, the first one starts
> responding
> > immediately but the second will starts 5 sec later (lock timeout)
> and then
> > perform a second request to my upstream.
> 
> This is all normal considering you have proxy_cache_lock enabled. 
> Your second
> request waits until the first request completes and fills up the cache
> entry.
> This cache entry is supposed to be used to serve the second request. 
> But it
> expires after 5 seconds and makes another request to the upstream.
> 
> > Is there a way to configure nginx to immediately respond to multiple
> > requests with a single request to my upstream?
> 
> There is no proxy/cache option to enable that behavior.  However, if
> your
> response is big enough, you can try using the slice module:
> 
> http://nginx.org/en/docs/http/ngx_http_slice_module.html
> 
> With this module you can slice the response in pieces and cache each
> one
> separately.  While the same logic as above is true for the slices too,
> the fact that they are usually much smaller than the entire response
> makes
> it look like the response is proxied to multiple client
> simultaneously.
> 
> -- 
> Roman Arutyunyan
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Posted at Nginx Forum: https://forum.nginx.org/read.php?2,281058,281062#msg-281062