The Ibuildings techPortal has posted the latest episode of their Dutch PHP Conference 2009 podcast series, a session given by Peter Verhage on handling the ups and downs of server loads and traffic.

NU.nl is a well known news website in its homeland, The Netherlands, and is actively expanding into other countries. On an average day NU.nl will serve up 7 million page views; peak traffic days are more than triple that number. [...] In this [episode] we want to look at the front end that we architected for NU.nl, and how we designed the system to handle both regular traffic and peaks.

To listen you can either use the in-page player or you can grab the mp3 directly.