It Never Hurts to Review Old Code
Dave Aiello wrote, "In the course of adding an XML-RPC ping for weblogs.com to CTDATA, I found a significant inefficiency in our version of slashd. The program was recreating at least one index page every time it checked for updated stories. When you multiply this inefficiency by three weblogs and four or five iterations per hour, that's a major waste of CPU cycles."
"I'm all for finding and fixing inefficiencies as a by-product of adding a seemingly unrelated new feature."