Serving multiple sites from varnish

[Albert Tollkuçi]

Hi,
I have several sites that I want to cache using the same instance of
varnish.

I did setup the backend using something like:

   if (req.http.host == "time.ikub.al") {
       # Process through time backend
       set req.backend_hint = timeserver;

   }
   if (req.http.host == "m.time.ikub.al") {
       # Process through time mobile backend
       set req.backend_hint = timemobileserver;

   }

and hash method looks like:


sub vcl_hash {
  # Called after vcl_recv to create a hash value for the request. This is
used as a key
  # to look up the object in Varnish.

  hash_data(req.url);

  if (req.http.host) {
    hash_data(req.http.host);
  } else {
    hash_data(server.ip);
  }

  # hash cookies for requests that have them
  if (req.http.Cookie) {
    hash_data(req.http.Cookie);
  }
}

However, I noticed that pages from mobile version where served when on
desktop and vice-versa. This happened on pages with the same name, for
example "Default.aspx".

As I understand the code above the hash should include the host part and
this should not happen. Am I missing something, or is there some
recommendation on how to handle multiple sites?

Thanx,
Albert



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