From: Ezra Zygmuntowicz <ezmobius@...>
Date: 2007-04-03T08:14:53+09:00
Subject: Re: updating an RJS template _while_ executing a method


On Apr 2, 2007, at 9:37 AM, Ryan Leavengood wrote:

> On 4/2/07, Matthieu Stone <matt.stone@cityticketexchange.com> wrote:
>> Ah.. In that case you need to start you long running routine  
>> outside of
>> rails. Something like backgroundrb, http:// 
>> backgroundrb.rubyforge.org/
>
> This is what we do in the Rails app I'm working on. We call a long
> running series of SOAP API calls from BackgrounDRb and then a periodic
> executor on the page calls a "progress" function which queries the
> BackgrounDrb worker to get the current progress. This works pretty
> well.
>
> Though I was very annoyed to see the latest version of BackgrounDrb is
> not supported on Windows. We deploy on Linux but develop on Windows so
> we are stuck on the last release. If you are listening Ezra, it would
> be nice if you could fix this :)
>
> Ryan
>

Ryan-

	I'd love to be able to get the new version to run on windows but I  
wasn't ever able to get it to work except for in cygwin. The reason  
being is the new version uses a multi process arch instead of a  
single process multi threaded. I rely heavily on ara's slave gem for  
this which handles forking child processes with drb handles from the  
parent -> child and child -> parent. As far as I know slave just  
can't work on windows yet.

	I will however soon be releasing a bdrb lite that is a revamped  
version of the old plugin that will be windows compatible. It's just  
inherently limited by ruby's green threading model. So running many  
concurrent jobs degrades the performance of all jobs :/

	I would love to be proven wrong and shown how I could get the newest  
version with the slave dep to run on windows though.

Cheers-
-- Ezra Zygmuntowicz 
-- Lead Rails Evangelist
-- ez@engineyard.com
-- Engine Yard, Serious Rails Hosting
-- (866) 518-YARD (9273)