Using Varnish to Proxy 1000s of different sites

[Martin Boer]

I think that Pound is more suitable for what you are trying to achieve. 
Although I don't know if Pound can handle a 1000 domain/backend 
combinations.
No matter what you throw at it, 1000 stays a large number.

Martin


On 08/05/2010 04:33 PM, Tony Primerano wrote:
> I suspect what I am trying to do here falls outside of Varnish's 
> intended purpose but here is what I am trying to do...
>
> Instead of using Varnish to cache content for a single site with 
> several backends,  I want to use it to allow me to serve existing 
> sites on different domains.
>
> For example I can run varnish on test.com <http://test.com> and serve 
> content from example.com <http://example.com> using this configuration.
>
> backend test {
>   .host = "example.com <http://example.com>";
>   .port = "80";
> }
>
> sub vcl_recv {
>   set req.http.host = "example.com <http://example.com>";
>   set req.backend = test;
>   return(pass);
> }
>
> But what if I have 1000s of backends and I choose them based on the 
> domain that user's hit varnish with.   Is this something Varnish 
> handles or is it only intended to work with a handful of backends?
>
> Also, it would be really cool if I could do something like this..
> sub vcl_recv {
>   set req.http.host = "example.com <http://example.com>";
>   set req.backend.host  = req.http.host;
>   return(pass);
> }
>
> I'm guessing backends are defined ahead of time for connection pooling 
> but maybe not.
>
> Anyway, this is long enough,  tell me if I would be nuts to try to do 
> this with Varnish and if so what would be better.   I'm tempted to 
> write my own proxy but that seems like such a waste.  :-)
>
> Tony
>
>
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