If-Modified-Since

[Geoff Simmons]

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On 2/24/11 9:59 AM, Poul-Henning Kamp wrote:
> In message <4D6578CE.7070708 at uplex.de>, Geoff Simmons writes:
> 
>> @phk: If we also implicitly set obj.conditional_timeout = 0 when obj.ttl
>> is set to 0, wouldn't existing VCL continue to do what people expect? 
> 
> Yes, I thought I had communicated that already:  when ttl is set to <= zero,
> grace and conditional_timeout SHALL also be set to zero.

You did indeed. So then my question is, is there a disadvantage to
allowing an object to be used for the IMS request if ttl and grace have
both elapsed, but conditional_timeout has not yet?

Someone might decide to set obj.ttl = 0 but then set
obj.conditional_timeout to non-zero. Or the timers could just run out
that way, if conditional_timeout > grace. In either case, nothing's
happening that you wouldn't expect from the configuration, especially if
by default conditional_timeout <= grace (you'd have to explicitly decide
otherwise). So why not use such an object for an IMS attempt?


Best,
Geoff
- -- 
UPLEX Systemoptimierung
Schwanenwik 24
22087 Hamburg
http://uplex.de/
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