<div dir="ltr">How is this patch set different from the soft-purges that Varnish Software was working on? </div><div class="gmail_extra"><br><br><div class="gmail_quote">On Sat, Jan 5, 2013 at 12:55 PM, Lasse Karstensen <span dir="ltr"><<a href="mailto:lasse.karstensen@gmail.com" target="_blank">lasse.karstensen@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Magnus Hagander:<br>
<div class="im">> On Fri, Jan 4, 2013 at 3:37 PM, Lasse Karstensen<br>
> <<a href="mailto:lasse.karstensen@gmail.com">lasse.karstensen@gmail.com</a>> wrote:<br>
>> Attached is a small patch set that implement soft purge support<br>
>> for Varnish trunk.<br>
</div>[..]<br>
<div class="im">>> The main use case for soft purges are big Varnish setups with many<br>
>> backends and automated purging systems. When doing maintenance on one of<br>
>> the backends, you end up with automatically purging something that can't be<br>
>> recreated right now and Varnish starts sending 503 replies.<br>
>> With softpurge the grace handling will kick in and serve a stale object instead.<br>
> Is there anything about this that actually becomes different in the<br>
> "with many backends" scenario? I've been looking forward to this<br>
> feature for many usecases with a single backend - when that backend is<br>
> slow or unreliable. I don't see why the number of backends would make<br>
> any difference, but am I missing something about the implementation?<br>
> (Automated purging is exactly the usecase for me though)<br>
<br>
</div>No, there is nothing in there that is specific to how many backends you have.<br>
<br>
I was just trying to set the stage a bit, since it might not be entirely<br>
obvious when you need this.<br>
<div class="im HOEnZb"><br>
--<br>
Lasse Karstensen<br>
Varnish Software AS<br>
<a href="http://www.varnish-software.com/" target="_blank">http://www.varnish-software.com/</a><br>
<br>
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