[varnish] Re: Varnish Serves only uncompressed objects if they are requested first

[Jeff Anderson]

Thank you.


On Dec 4, 2008, at 2:49 PM, Ricardo Newbery wrote:

>
>
> Your app server should set the Vary on *all* responses if *any*  
> response can vary.
>
> Ric
>
>
>
> On Dec 4, 2008, at 11:59 AM, Jeff Anderson wrote:
>
>> Our app servers are sending the Vary on the Accept-Encoding when
>> compression is requested.  If compression is not requested they do  
>> not
>> perform the Vary.  Does that mean we should find a way to send a  
>> Vary:
>> Accept-Encoding:  null,gzip,deflate or something?  Is there a 'no
>> compression' accept-encoding header?
>>
>>
>> On Dec 2, 2008, at 10:36 PM, Per Buer wrote:
>>
>>> Jeff Anderson skrev:
>>>> It looks like if the first requested page is for an uncompressed  
>>>> page
>>>> varnish will only deliver the uncompressed page from cache even  
>>>> if a
>>>> compressed page is requested.
>>>
>>> As long as you don't Vary: on the Accept-Encoding I guess that is
>>> expected. Varnish doesn't not understand the Accept-Encoding header.
>>>
>>>> (..)
>>>> What could be causing this?  The only way to fix appears to be to  
>>>> add
>>>> the lines below:
>>>>
>>>> sub vcl_hash {
>>>> if (req.http.Accept-Encoding ~ "gzip" || req.http.Accept-Encoding ~
>>>> "deflate") {
>>>> set req.hash += req.http.Accept-Encoding;
>>>> }
>>>
>>> Either use the fix you suggested or add a Vary: Accept-Encoding on  
>>> the
>>> backend.
>>>
>>> -- 
>>> Per Buer - Leder Infrastruktur og Drift - Redpill Linpro
>>> Telefon: 21 54 41 21 - Mobil: 958 39 117
>>> http://linpro.no/ | http://redpill.se/
>>>
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>>
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>