When NGINX works as reverse proxy, I try to upload about 300M file to the
backend webserver, I failed.
1) I change the entry "client_max_body_size 300m" in nginx.conf, but I still
2) It seems that the file is cached by nginx,then re-transmit to backend.
If I want to upload 1GB size file and there is no enough memory in
reverse-server, it is fail also?