Conditional caching question

[David Pratt]

Sorry wanted to clarify that I wanted varnish checked first before going 
to backend. If object is frequently requested, add to cache.

David Pratt wrote:
> Hi. In most cases, I want a request to be passed to a backend where it 
> will be handled by server. If frequency is high, however; I want to add 
> the object to varnish cache and have varnish handle it. I am not worried 
> about a mechanism to keeping track of frequency of requests. Question is 
> what is available to me to add an object/path to the varnish cache if it 
> was originally passed? Many thanks.
> 
> Regards,
> David
>