nginx-proxy.conf

proxy_cache_valid     1h; # 200, 301 and 302 will be cached.
proxy_cache_use_stale error
    timeout
    invalid_header
    http_500
    http_502
    http_504
    http_404;

proxy_buffering           on;
proxy_cache_min_uses       3;
proxy_max_temp_file_size  0;
proxy_ignore_client_abort off;
proxy_intercept_errors    on;
proxy_next_upstream       error timeout invalid_header;
proxy_redirect            off;
proxy_set_header          X-Forwarded-For $remote_addr;
proxy_connect_timeout     600;
proxy_send_timeout        600;
proxy_read_timeout        600;
proxy_ignore_headers      Expires Cache-Control;
proxy_http_version        1.1;
proxy_set_header          Connection "";
#proxy_cache_key          "$scheme$host$uri$is_args$args";root@btu-nginx01:/