I'm the author of Delayed Job. The popularity of it really surprises me to no end, and always brings a smile to my face. DJ took about 15 minutes to code up originally and is a product of one of those software rage moments ("why don't people queue like this??!").

I put it on GitHub because Jeremy Kemper really wanted to have a look at it. I thought the idea behind it was so naive that it would have occurred to everyone who ever needed a queue and had discarded the approach for some reason.

Little did I know that it was a fairly novel approach and that it would become one of my most popular libraries, right after ActiveMerchant and Liquid.

Thank you for the PHP port!