From owner-freebsd-isp Wed Apr 24 6:22:46 2002 Delivered-To: freebsd-isp@freebsd.org Received: from bilver.wjv.com (spdsl-033.wanlogistics.net [63.209.115.33]) by hub.freebsd.org (Postfix) with ESMTP id D0B2337B41F for ; Wed, 24 Apr 2002 06:22:40 -0700 (PDT) Received: (from bv@localhost) by bilver.wjv.com (8.11.6/8.11.6) id g3ODLQS86527 for freebsd-isp@freebsd.org; Wed, 24 Apr 2002 09:21:26 -0400 (EDT) (envelope-from bv) Date: Wed, 24 Apr 2002 09:21:25 -0400 From: Bill Vermillion To: freebsd-isp@freebsd.org Subject: Re: HTTP Load Balancing and Availability Solutions Message-ID: <20020424132125.GE85736@wjv.com> Reply-To: bv@wjv.com References: <3CC6A5D2.3070701@emre.de> <1019652482.38204.4.camel@xyzzy.intranet.snsonline.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1019652482.38204.4.camel@xyzzy.intranet.snsonline.net> User-Agent: Mutt/1.3.25i Organization: W.J.Vermillion / Orlando - Winter Park Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Wed, Apr 24, 2002 at 22:48 , while impersonating an expert on the internet, Mark Sergeant sent this to stdout: > Depending on the nature of the project and the availability > required I would only recommend a software based solution for a > project that didn't have a requirement of more than 95% uptime, 95% UPTIME. That is only 51 out of 52 weeks/year. Even 99.999% is 8 hours down time per year. Five 9' is usually achievable with just good hw/sw design. My web server - though not heavily stressed is a 498 days 16:44 as I type this. > My recommendation would be should it absolutely have to be done with > software then go with the mod_proxy and a 1 hour ttl for your www > address (anything less than an hour is usually ignored), this way a > replacement box can take over the proxying server inside of an hour > should there be any issues. Would it not make sense to monitor the target machine and if/when it fails then just re-write the IP on the standby machine to achieve a fail-over scenario. Bill -- Bill Vermillion - bv @ wjv . com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message