There is no support in nginx to do keep-alive connections to backend servers. Placing nginx and the backend servers on the same LAN should make it less of an i

There is no support in nginx to do keep-alive connections to backend servers. Placing nginx and the backend servers on the same LAN should make it less of an issue than high-latency frontend connections. The backend response will also be buffered in nginx until it has received it all before the front-end user is served the request.