Question

Let’s say I have two Tornado servers, server1 for serving web pages with pattern /news/blahblah, and server2 for pages with pattern /data/blahblah. These two servers together form the back-end of my application.

I wonder how should I integrate and expose them to the clients, so that different requests to different URLs get served by different server.

I heard of HAProxy, do I have to use that?

Answer 1

You can use haproxy, but you don’t need it in this case.

Use nginx.

Here is example of config for multiple tornados:

server {
    listen *:80;  
    server_name myserver.com;  

    location /data/blahblah {
        proxy_pass http://127.0.0.1:3001;
        proxy_redirect off;
    }

    location /news/blahblah { 
        proxy_pass http://127.0.0.1:4001;
        proxy_redirect off;
    }
}

And then you can scale it with haproxy…

listen http 0.0.0.0:80
    mode http
    stats enable
    stats refresh 10s
    stats hide-version
    cookie MYSERVER insert
    balance roundrobin
    option httpclose
    option httpchk OPTIONS /heath.html
    option forwardfor
    option httplog
    option logasap
    log global
    server MYSERVER 10.0.0.1:80 cookie SERVER1 check
    server MYSERVER 10.0.0.2:80 cookie SERVER2 check
    server MYSERVER 10.0.0.3:80 cookie SERVER3 check