Soft purge support (patch)

[Rogier 'DocWilco' Mulhuijzen]

How is this patch set different from the soft-purges that Varnish Software
was working on?


On Sat, Jan 5, 2013 at 12:55 PM, Lasse Karstensen <
lasse.karstensen at gmail.com> wrote:

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