nginx.conf

user nginx;

worker_processes    auto;

events { worker_connections 1024; }

http {

	log_format upstream_time '$remote_addr $http_x_forwarded_for - $remote_user [$time_local] '
                             '$ssl_protocol "$request" $status $body_bytes_sent '
                             '"$http_referer" "$http_user_agent"'
                             'rt=$request_time uct="$upstream_connect_time" uht="$upstream_header_time" urt="$upstream_response_time"';
	
    access_log /var/log/nginx/access.log upstream_time;
	
	include         /etc/nginx/proxy.conf;
	include         /etc/nginx/mime.types;
    limit_req_zone  $binary_remote_addr zone=one:10m rate=5r/s;
    server_tokens   off;
	 
    sendfile on;
	keepalive_timeout   	29;
    client_body_timeout 	10; 
	client_header_timeout 	10;
	send_timeout 			10;

    upstream api_servers {

        server api1:5000;
        server api2:5000;
        server api3:5000;
    }


    # Configuration for the server
    server {

        # Running port
        listen [::]:5100;
        listen 5100;
		
		add_header X-Frame-Options DENY;
        add_header X-Content-Type-Options nosniff;
        add_header X-Frame-Options "SAMEORIGIN";

        location / {

            proxy_pass http://api_servers;
			limit_req  zone=one burst=10 nodelay;

        }
    }
}