From: David Vallner <david@...>
Date: 2007-02-07T23:37:10+09:00
Subject: Re: default to when missing

On Tue, 06 Feb 2007 23:49:20 +0100, Jerry Jones <cragmor@gmail.com> wrote:

> Right now, it is just showing the
> alternate text, which is the image file name it is looking for.
> Would it be a big hit on performance to have it check the images dir
> for the file name prior to rendering the page, or should it keep an
> index somewhere of the files that are there, or am I complete off base
> in how to approach this?
>

An index will probably flat-out outperform a system call on access, with  
the cost being in recomputation of said. However, benchmark. A few stat()s  
per request probably won't be a bottleneck anyway.

David Vallner