Current Varnish status?
des at linpro.no
Tue Feb 13 13:51:43 CET 2007
Denis Brækhus <denis at startsiden.no> writes:
> Dag-Erling Smørgrav <des at linpro.no> wrote:
> > The differences between the released version and the svn trunk are
> > currently very small (a few bug fixes).
> So SVN would actually be more stable then?
Possibly, if your environment triggers the bugs that have been fixed
since the last release.
> > Whether Varnish is usable in a production environment depends on the
> > nature of your application. Varnish currently does not respect Vary:
> > headers and interacts poorly with cookies, but if you don't use
> > either, you'll be fine.
> Is it possible to define "interacts poorly with cookies"? I do think
> our application relies quite heavily on cookies for session
> handling. Does interacting poorly imply that any site where cookies
> are used do not work well with Varnish, or simply that Varnish does
> not handle caching well when cookies are involved?
any proxy, not just Varnish.
By default, Varnish goes into PASS mode if the client includes a
cookie in the request. It will however cache a page delivered from
the backend even if it contains a cookie, so everybody gets the same
cookie until the page expires... In Varnish 1.0, this is a feature,
Varnish 2.0 - perhaps even in 1.1 if we decide to do a 1.1 - it will
be reclassified as a bug, and fixed.
Varnish to always use PASS mode for that part, and cache the rest.
BTW, I've looked at startsiden.no and did not find any cookies on any
page I visited.
Senior Software Developer
Linpro AS - www.linpro.no
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