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From: Jordan Ritter <jpr5@darkridge.com>
To: unicorn list <mongrel-unicorn@rubyforge.org>
Subject: Re: Thread.current
Date: Thu, 13 Jan 2011 08:46:23 -0800	[thread overview]
Message-ID: <28E5C7A1-2B77-4B90-AEE3-C2812A327366@darkridge.com> (raw)
In-Reply-To: <20110113042636.GA8264@dcvr.yhbt.net>

For the record, the "clear the Thread.current storage before/after each request" is what I think is a crappy idiom.  YMMV I guess.

cheers,
--jordan

On Jan 12, 2011, at 8:26 PM, Eric Wong wrote:

> Jimmy Soho <jimmy.soho@gmail.com> wrote:
>> Take for example activesupport's usage of Time.zone. Under water this
>> is set in a thread local var. If you set Time.zone in one request, but
>> not in the next request, using unicorn the next request will use the
>> time zone of the previous request. Using rack or mongrel (in
>> multithreaded mode) you don't have this issue perse (though they have
>> other issues then).
>> 
>> Same for the i18n gem and it's usage of the I18n.locale value, which
>> is also set in a thread local var.
>> 
>> So yeah, unfortunately I have to take into account this "crappy idiom"
>> and need to know exactly which thread local vars are set by all the
>> components we use, and determine which of those must be reset before
>> each request.
> 
> You can probably just write a trivial middleware to clear all
> keys in Thread.current before every request.  Or play around with
> Rainbows! with a single-threaded ThreadSpawn:
> 
> cat >> unicorn.conf.rb <<EOF
> Rainbows! do
>  use :ThreadSpawn
>  worker_connections 1
>  keepalive_timeout 0
> end
> EOF
> 
> And then just run "rainbows" instead of "unicorn".
> 
> -- 
> Eric Wong
> _______________________________________________
> Unicorn mailing list - mongrel-unicorn@rubyforge.org
> http://rubyforge.org/mailman/listinfo/mongrel-unicorn
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      reply	other threads:[~2011-01-13 16:49 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-08  2:00 Thread.current Jimmy Soho
2011-01-08  2:57 ` Thread.current Eric Wong
2011-01-08  3:09 ` Thread.current Curtis j Schofield
2011-01-08  5:54   ` Thread.current Jimmy Soho
2011-01-11 22:52     ` Thread.current Jimmy Soho
2011-01-11 23:12       ` Thread.current Eric Wong
2011-01-11 23:12       ` Thread.current Jordan Ritter
2011-01-12  3:07         ` Thread.current Jimmy Soho
2011-01-13  4:26           ` Thread.current Eric Wong
2011-01-13 16:46             ` Jordan Ritter [this message]

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