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From: Eric Wong <normalperson@yhbt.net>
To: rack-devel@googlegroups.com
Cc: Aman Gupta <aman@tmm1.net>
Subject: Re: [RFC/PATCH] Add Rack::Builder#warmup method for app preloading.
Date: Wed, 6 Nov 2013 02:57:52 +0000	[thread overview]
Message-ID: <20131106025752.GA1712@dcvr.yhbt.net> (raw)
In-Reply-To: <20131029175419.GA14881@dcvr.yhbt.net>

Eric Wong <normalperson@yhbt.net> wrote:
> James Tucker <jftucker@gmail.com> wrote:
> > Yeah, Builder#call leads to mistakes all the time and then people claiming
> > performance sucks. I don't think the simple use case there ever helped.
> 
> Just curious, is this in test suites or code running on live servers?
> I can't imagine there are many one-off webservers existing and using
> that directly...

Answering my own question, the "map" directive in Builder seems to
trigger Builder#to_app in every single request.

It looks like map completely defeats warmup and preloading...

-------------------------------8<-----------------------------
require 'rack/lobster'
class Wtf
  def initialize(app)
    # this prints every single request :<
    p "#$$ #{Time.now} initialized"
    @app = app
  end
  def call env
    @app.call(env)
  end
end

map "http://example.com/" do
  use Wtf
  run Rack::Lobster.new
end
-------------------------------8<-----------------------------
(tested with "rackup -s webrick", too, so none of my own broken server
 code running)

But yeah, extensive use of map on *.bogomips.org and *.yhbt.net
now that I've switched that hole thing over to yahns...

-- 

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  reply	other threads:[~2013-11-06  2:58 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-02 23:10 ruby
2013-10-02 23:55 ` Konstantin Haase
2013-10-29  0:02   ` James Tucker
2013-10-29  0:21     ` Santiago Pastorino
2013-10-29 17:54     ` Eric Wong
2013-11-06  2:57       ` Eric Wong [this message]
2013-11-06  3:12         ` [PATCH] builder: avoid to_app on every request when using map Eric Wong
2014-07-15  4:09           ` James Tucker

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