From: Drew Olson <olsonas@...>
Date: 2007-02-10T00:59:36+09:00
Subject: Re: General Approach to Data Validation

Ezra Zygmuntowicz wrote:
> I've used the AR extensions project, it adds a lot of the stuff you
> need to work with large data sets. Hosting lots of rails apps the
> error i see most often is either the ActiveRecord n+1 query problem
> where each page results in hundreds of sql queries. Or its the too
> many :include joins that end up pulling hundreds or thousands of
> objects into memory at once, killing the mongrels the app runs in.

Ezra -

Is it necessary to use the AR extensions project in conjunction with 
rails or can I use it as described above, when I'm using ActiveRecord 
without using the entire Rails framework? If so, do I install the 
extension as you would a gem?

I must say, I was also amazed that there was no way to iterate across 
large datasets without pulling every record into memory.

Thanks to everyone for the quick, informative responses to this issue.

-Drew

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