Lots of configs
straightflush at gmail.com
Mon Mar 7 19:55:09 CET 2011
Thanks Per. I guess the other part of this was to make the config more
scalable so we are not constantly adding if/else blocks. Would by nice to
have a way to just do something like
call(custom_ + req.hostname)
On Mon, Mar 7, 2011 at 1:35 PM, Per Buer <perbu at varnish-software.com> wrote:
> On Sun, Mar 6, 2011 at 11:39 PM, AD <straightflush at gmail.com> wrote:
>> what is the best way to run an instance of varnish that may need
>> different vcl configurations for each hostname. This could end up being
>> 100-500 includes to map to each hostname and then a long if/then block based
>> on the hostname. Is there a more scalable way to deal with this?
> CPU and memory bandwidth is abundant on modern servers. I'm actually not
> sure that having a 500 entries long if/else statement will hamper
> performance at all. Remember, there will be no system calls. I would guess a
> modern server will execute at least a four million regex-based if/else per
> second per CPU core if most of the code and data will be in the on die
> cache. So executing 500 matches should take about 0.5ms.
> It might not make sense to optimize this.
> Per Buer, Varnish Software
> Phone: +47 21 98 92 61 / Mobile: +47 958 39 117 / Skype: per.buer
> Varnish makes websites fly!
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