Re: GIF file uncacheable?

Rolf Leggewie wrote:

> I found this in my log and was surprised.  Why is
> http://i02.i.aliimg.com/wimg/buyer/single/loading-32x32.gif uncacheable?

  $ curl -I http://i02.i.aliimg.com/wimg/buyer/single/loading-32x32.gif | grep ^Expires:
  Expires: Fri, 08 Aug 2014 02:43:50 GMT

The server is saying that this page can be cached until the second week of
August 2014.  How generous.

> Is this the server claiming such so as to have the clients always
> download a new copy?

Actually -- no.  Polipo will not redownload an "uncachable" object, it
will merely revalidate it (check whether it needs to be downloaded again).
You can avoid that by using the relaxTransparency tweak.

-- Juliusz

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