Received: from localhost (unknown [200.46.204.184]) by postgresql.org (Postfix) with ESMTP id 6AA399FA030 for ; Thu, 1 Nov 2007 16:11:07 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.184]) (amavisd-maia, port 10024) with ESMTP id 60986-01-4 for ; Thu, 1 Nov 2007 16:10:51 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.5 Received: from main2.mycybernet.net (main2.mycybernet.net [209.222.63.140]) by postgresql.org (Postfix) with ESMTP id 0F4B59FC7A1 for ; Thu, 1 Nov 2007 14:04:57 -0300 (ADT) Received: from 227-54-222-209.mycybernet.net ([209.222.54.227] helo=crankycanuck.ca) by main2.mycybernet.net with esmtp (Exim 4.62) (envelope-from ) id 1IndTU-0003mR-Im for pgsql-www@postgresql.org; Thu, 01 Nov 2007 13:04:56 -0400 Received: by crankycanuck.ca (Postfix, from userid 1000) id 597AA4050; Thu, 1 Nov 2007 13:04:51 -0400 (EDT) Date: Thu, 1 Nov 2007 13:04:51 -0400 From: Andrew Sullivan To: pgsql-www@postgresql.org Subject: Re: what is up with the PG mailing lists? Message-ID: <20071101170451.GS27676@crankycanuck.ca> References: <26669.1193891360@sss.pgh.pa.us> <47299585.7030402@hagander.net> <47299957.5020605@postgresql.org> <2968.1193919208@sss.pgh.pa.us> <20071101080959.49f3087b@scratch> <20071101152333.GM27676@crankycanuck.ca> <4729F105.30704@hagander.net> <1127E6493CBA8A29F343C4D7@ganymede.hub.org> <4729F7D2.6050608@hagander.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.9i X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200711/38 X-Sequence-Number: 12816 On Thu, Nov 01, 2007 at 01:16:01PM -0300, Marc G. Fournier wrote: > minutes, fail, etc ... I'm not sure if its a simple '2x' algorithm, but the No, it's a progressive backoff with some randomisation in every modern server I know of. That's because, if there's some periodic issue that causes DoS, then just backing off the same period would do it again. We already _had_ that nightmare on the Internet, and we hope not to experience it again ;-) A -- Andrew Sullivan | ajs@crankycanuck.ca I remember when computers were frustrating because they *did* exactly what you told them to. That actually seems sort of quaint now. --J.D. Baldwin