obj.ttl derived?

[David Birdsong]

awesome, thanks.  this explains poor cache-hit ratio.

On Mon, Sep 14, 2009 at 12:22 PM, Kristian Lyngstol
<kristian at redpill-linpro.com> wrote:
> On Mon, Sep 14, 2009 at 11:57:25AM -0700, David Birdsong wrote:
>> How is obj.ttl derived when both Expires and max-age is set by the backends?
>>
>> We had a case where the backend was setting Expires to 60seconds after
>> the request and max-age was 5184000.  Additionally in vcl_fetch:
>>
>> sub vcl_fetch {
>>         if (obj.ttl < 9000s) {
>>                 set obj.ttl = 9000s;
>>         }
>> }
>>
>> What would obj.ttl be set to given the Expires and max-age contradiction?
>
> If s-maxage is set, use that as default, otherwise use max-age as default.
>
> If Expires is sooner than the default, use that.
>
> So in your example, the ttl should be 60s.
>
> --
> Kristian Lyngstøl
> Redpill Linpro AS
> Tlf: +47 21544179
> Mob: +47 99014497
>