Anand, You may want to look at grace mode, it could resolve your issue. When the backend is too busy you can serve stale content for a minute or something.
Have a look: http://www.varnish-cache.org/docs/trunk/tutorial/handling_misbehaving_servers.html Traian ________________________________________ From: [email protected] [[email protected]] On Behalf Of Anand Shah [[email protected]] Sent: Thursday, December 23, 2010 6:26 AM To: Robert Shilston Cc: [email protected] Subject: Re: Too many 503 backend errors Thanks robert, But i have already tried all this stuff's. The problem with probing is that if your back-end is unhealthy for a second and if varnish declares it unhealthy due to some reason than it shows backend unhealthy for next 5 mins or so whereas the interval is only 5s. So if i m running on one back-end all the requests for this backend fails. The one i m using is a very domain with 3000 req/s. so cannot afford a second of unhealthy network or unreachability. Regards, Anand _______________________________________________ varnish-misc mailing list [email protected] http://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
