restart in varnish 4

[Laurent Lavaud]

yes good idea, i think it will works, thanks ! 

-- 
Laurent Lavaud 
Administrateur Systèmes et Réseaux 

----- Mail original -----

> Can't you add a custom header on your req object in vcl_recv that
> tells if it's a restart or not ?

> Then you check this header to know if you must create the
> hit_for_pass object.

> Thierry

> -------- Message d'origine --------
> De : Laurent Lavaud
> Date :05/11/2014 17:29 (GMT+01:00)
> A : "MAGNIEN, Thierry"
> Cc : varnish-misc at varnish-cache.org
> Objet : Re: restart in varnish 4

> ok i have tried this solution, and it seems to work but i still have
> somes problems

> let me explain, in v3 my restart rule is the following one:

> if(beresp.status == 404 && req.restarts == 0) {
> return(restart);
> }

> and i also have a rule to hit_for_pass object that is not a status
> 200:

> if (beresp.status != 200 && beresp.status != 206 && beresp.status !=
> 301) {
> return (hit_for_pass);
> }

> so now in v4 if i restart in vcl_deliver, i have an hit_for_pass
> object inserted in the cache (because status 404), and it is not
> good.

> so i thought to add a special rule before the hit_for_pass, like this
> one:

> if(beresp.status == 404 && req.restarts == 0) {
> return (deliver);
> }

> but in v4 i can't use req.restarts in vcl_backend_response... ! :(

> ----- Mail original -----
> > You can check your resp.status in vcl_deliver and return(restart)
> > here.
> >
> > Regards,
> > Thierry
> >
> > -----Message d'origine-----
> > De : Laurent Lavaud [ mailto:laurent.lavaud at ladtech.fr ]
> > Envoyé : mercredi 5 novembre 2014 16:32
> > À : MAGNIEN, Thierry
> > Cc : varnish-misc at varnish-cache.org
> > Objet : Re: restart in varnish 4
> >
> > No it is not what i want because retry jump back to
> > vcl_backend_fetch
> > and i cant set req.backend_hint in this vlc
> >
> > ----- Mail original -----
> > > Hi,
> > >
> > > Not sure bue this may be what you're looking for:
> > > https://www.varnish-cache.org/docs/trunk/whats-new/upgrading.html#backend-restarts-are-now-retry
> > >
> > > Regards,
> > > Thierry
> > >
> > > -----Message d'origine-----
> > > De :
> > > varnish-misc-bounces+thierry.magnien=sfr.com at varnish-cache.org
> > > [
> > > mailto:varnish-misc-bounces+thierry.magnien=sfr.com at varnish-cache.org
> > > ]
> > > De la part de Laurent Lavaud
> > > Envoyé : mercredi 5 novembre 2014 16:14
> > > À : varnish-misc at varnish-cache.org
> > > Objet : restart in varnish 4
> > >
> > > Hello,
> > >
> > > In varnish 3 i do a restart in vcl_fetch when i have a 404 error
> > > from
> > > my backend, it allow me to set a different backend for the second
> > > request.
> > >
> > > With varnish 4 i cant do a restart in vcl_backend_response
> > >
> > > How can i achieve this ?
> > >
> > > _______________________________________________
> > > varnish-misc mailing list
> > > varnish-misc at varnish-cache.org
> > > https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
> > >
> >
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