Processing ESIs in parallel

[Steve Webster]

On 4 Mar 2011, at 11:07, Poul-Henning Kamp wrote:

> In message <FC1F5965-7DAC-4D30-8A4E-33B81E917C9B at lovefilm.com>, Steve Webster w
> rites:
> 
>> I know there has been a lot of work on ESIs for Varnish 3, but as far as I 
>> can tell they are still processed serially. Are there any plans to switch to
>> a parallel processing model? If not, might this be a worthy feature request
>> for a future version of Varnish?s
> 
> I wouldn't call them "plans", but it is on our wish-list.

This is good news.

> It is not simple though, so don't hold your breath.

Indeed. I had one of those "how hard could this be" moments and started trying to implement it myself, then realised I had opened a can of worms and decided to leave Varnish hacking to the experts.

I have a workaround for now – a custom Apache output filter that uses LWP::Parallel – so thankfully breathe-holding isn't necessary.

Cheers,

Steve

-- 
Steve Webster
Web Architect
LOVEFiLM

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