Thanks Guillaume, that's good to know. I'll give it some thoughts and perhaps 
implement it and keep an eye on the TTFB.

Nigel

> On 9 Apr 2017, at 15:36, Guillaume Quintard <[email protected]> 
> wrote:
> 
> You can test, but I don't think it's worth the trouble. Virtually all clients 
> support gzip, so you'll only really use one version of your object.
> 
> -- 
> Guillaume Quintard
> 
>> On Sat, Apr 8, 2017 at 8:49 PM, Nigel Peck <[email protected]> wrote:
>> 
>> I am looking at how best to set up compression on my setup, that is a 
>> Varnish server handing out cached content from a separate back-end server. 
>> In his notes on the subject, Poul-Henning says that there is no need to 
>> store both a gzipped and an un-gzipped copy of requests in the cache, since 
>> Varnish can gunzip on the fly.
>> 
>> https://varnish-cache.org/docs/4.1/phk/gzip.html
>> 
>> My question is, wouldn't it be quicker to have both a gzipped and ungzipped 
>> copy stored in memory, so that this does not need to be changed on the fly? 
>> Or is the time taken to ungzip so negligible as to make this unnecessary?
>> 
>> Thanks
>> Nigel
>> 
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> 
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