From: Alex Maccaw <maccman@...>
Date: 2008-01-08T21:24:23+09:00
Subject: Finding the first file in a dir, fast, for message queue.

I have a file based msg queue, and msgs are stored five folders down.

When a request for the next msg is received, I need to grab the first
file I can find, as fast as I can.

I've tried Dir.glob, and only selecting the first file. This however is
an awful way of doing it as it loads every file into memory, before
selecting the first.

A bit better is Find.find, which finds files incrementally. However,
this still takes about 0.005 seconds (I presume since it's also
'finding' directories').

Is there a faster way to do this?
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