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From: Eric Wong <normalperson@yhbt.net>
To: unicorn list <mongrel-unicorn@rubyforge.org>
Subject: Re: Combating nginx 499 HTTP responses during flash traffic scenario
Date: Thu, 29 Nov 2012 20:41:00 +0000	[thread overview]
Message-ID: <20121129204100.GA28683@dcvr.yhbt.net> (raw)
In-Reply-To: <CAK4qKG3rkfVYLyeqEqQyuNEh_nZ8yw0X_cwTxJfJ+TOU+y8F+w@mail.gmail.com>

Tom Burns <tom.burns@jadedpixel.com> wrote:
> So we just finished the US Black Friday / Cyber Monday weekend running
> unicorn forked with the last version of the patch I had sent you.  It
> worked splendidly and helped us handle huge flash sales without
> increased response time over the weekend.
> 
> Whereas in previous flash traffic scenarios we would see the number of
> HTTP 499 responses grow past the number of real HTTP 200 responses,
> over the weekend we saw no growth in 499s during flash sales.
> 
> Unexpectedly the patch also helped us ward off a DoS attack where the
> attackers were disconnecting immediately after making a request.

That is absolutely wonderful to hear.  I've amended your commit message
with the above quoted portion.

> I've attached the patch again, with your last comments addressed.  Let
> me know if there's anything else.
> 
> Thanks again for your help in this matter.

Thank _you_ for the patch, documentation and most importantly:
testing with real traffic.

I fixed up some minor line-wrapping, signed-off, and added your
quote above to the commit message.  Pushed as
commit 5c700fc2cf398848ddcf71a2aa3f0f2a6563e87b
to git://bogomips.org/unicorn.git

I'll tag and push a 4.5.0.preview1 gem soon
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  parent reply	other threads:[~2012-11-29 20:41 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-29 17:44 Combating nginx 499 HTTP responses during flash traffic scenario Tom Burns
2012-10-29 18:45 ` Eric Wong
2012-10-29 19:27   ` Hongli Lai
2012-10-29 19:41     ` Eric Wong
2012-10-29 21:06       ` Hongli Lai
2012-10-29 21:53   ` Eric Wong
2012-10-29 22:21     ` Tom Burns
2012-10-30 20:40     ` Tom Burns
2012-10-30 21:37       ` Eric Wong
2012-11-02 17:59         ` Tom Burns
2012-11-02 19:38           ` Eric Wong
2012-11-03 22:45             ` Tom Burns
2012-11-05 11:48               ` Eric Wong
2012-11-06  3:16                 ` Tom Burns
2012-11-06 21:23                   ` Eric Wong
2012-11-29 15:52                     ` Tom Burns
2012-11-29 20:30                       ` Lawrence Pit
2012-11-29 20:57                         ` Tom Burns
2012-11-29 21:30                         ` Eric Wong
2012-11-30 23:47                           ` Eric Wong
2012-11-29 20:41                       ` Eric Wong [this message]
2012-12-04  3:00                         ` Eric Wong
2012-11-29 21:19                       ` Eric Wong
2012-11-29 21:55                         ` [RFC/PATCH] check_client_connection: document local-only requirement Eric Wong
2012-11-29 23:47                           ` Tom Burns

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