nginx.conf

#user  nobody;
worker_processes  auto;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    #tcp_nopush     on;
    #keepalive_timeout  0;
    keepalive_timeout  65;
    gzip  on;

    server {
        listen       80;
        server_name  localhost;

        charset utf-8;

        location / {
            root  html;
            try_files $uri $uri/ @router;
            index  index.html index.htm;
        }

        location @router {
            rewrite ^.*$ /index.html break;
        }

        location /backend/{
            proxy_set_header Host $http_host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header REMOTE-HOST $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            client_max_body_size 20M;
            proxy_send_timeout 500;
            proxy_read_timeout 480;
            proxy_pass http://localhost:8992;
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
}