Strategies for splitting load across varnish instances? And avoiding single-point-of-failure?
phk at phk.freebsd.dk
Mon Jan 18 21:50:05 CET 2010
In message <14B75F07-969A-43D1-8CC9-9605A2642C9C at slide.com>, Ken Brownfield wri
>> If you receive more than 100 requests/sec per Varnish instance and you
>use a disk cache, you will die.
>I was surprised by this, what appears to be grossly irresponsible
>guidance, given how large the installed base is that does thousands per
>second quite happily.
Just for the record: I didn't comment onthat one, since I sort of
assumed that everybody could see that a blanket statement like that
could never be universally true.
Obviously, if your 100 requests are for DVD images, you have tough
row to hoe when it comes to designing a disk subsystem, but for
more reasonable loads, the above is patently wrong.
And yes, if your're worried about diskperformance SSD is the way
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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