'Keep connection' does not mean what you think it means. That does not tie a client connection to a backend connection. To do that, you will need stuff like ip_hash <http://nginx.org/en/docs/http/ngx_http_upstream_module.html#ip_hash> or more advenced session mechanisms (which are sadly not available in FOSS... yet?).
Read the docs on fastcgi_keep_conn <http://nginx.org/en/docs/http/ngx_http_fastcgi_module.html#fastcgi_keep_conn>, which says it ensures the FastCGI connection is not close after being used, which is the normal way of doing it. Use that in relation with keepalive <http://nginx.org/en/docs/http/ngx_http_upstream_module.html#keepalive>, as instructed. That means that connections to the backend will remain open after being open, so the next time the webserver addresses to them, they won't need to open a new connection to them. --- *B. R.* On Fri, Mar 20, 2015 at 10:25 PM, nginxuser100 <[email protected]> wrote: > Hi, I would like nginx to serve all requests of a given TCP connection to > the same FCGI server. If a new TCP connection is established, then nginx > would select the next UDS FCGI server in round-robin fashion. > > Can this be achieved with NGINX, and if yes, how? > > I thought turning on fastcgi_keep_conn on would achieve this goal, but it > is > not what happened. My obervation was that each FCGI server took turn > receiving a new request even if all the requests are from the same TCP > connection. > > I had: > > upstream backend { > server unix:/tmp/fastcgi/socket1 ...; > server unix:/tmp/fastcgi/socket2 ...; > keepalive 32; > } > > server { > ... > location <uri> { > fastcgi_keep_conn on; > fastcgi_pass backend; > } > > Thank you. > > Posted at Nginx Forum: > http://forum.nginx.org/read.php?2,257508,257508#msg-257508 > > _______________________________________________ > nginx mailing list > [email protected] > http://mailman.nginx.org/mailman/listinfo/nginx >
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