proxy_pass re-use connections to upstream server

matt.meisberger · 2016-05-26T10:46:02+00:00

Some pointers: - You can use the non-blocking cosocket API to access any TCP based backend (see resty.mysql, resty.dns, etc)...

proxy_pass re-use connections to upstream server

matt.meisberger

Hello,

First Question

Wondering if it is possible to write something that will reuse one keep-alive tcp connection to the upstream server for multiple incoming requests. So for example if I were to proxy_pass to example.com and had 100 concurrent users could nginx reuse the initial tcp connection for subsequent requests.

Second Question

If the above doesn't work would it be possible to have open resty bulk fetch a list of assets from example.com on a http2 or keep-alive connection so that by the time the client requests them they are all cached on the proxy_pass server?

Any help or documentation reference would be very appreciated.

thanks,

Matt

luis.gasca

For the first question, I believe you can use the standard nginx keepalive direcive inside proxy_pass. In this case, you will also need to set a couple of headers to make sure the connections with the backend are kept alive. Something along this line:

upstream backend {
    ...
    keepalive 8;
}

location /whatever {
    proxy_pass http://backend;
    proxy_http_version 1.1;
    proxy_set_header Connection "";
}

El 26/05/2016 a las 4:46, Matt Meisberger escribió:

Hello,

First Question

Wondering if it is possible to write something that will reuse one keep-alive tcp connection to the upstream server for multiple incoming requests. So for example if I were to proxy_pass to example.com and had 100 concurrent users could nginx reuse the initial tcp connection for subsequent requests.

Second Question

If the above doesn't work would it be possible to have open resty bulk fetch a list of assets from example.com on a http2 or keep-alive connection so that by the time the client requests them they are all cached on the proxy_pass server?

Any help or documentation reference would be very appreciated.

thanks,

Matt
.