Nginx: The power within
at Dutch PHP Conference 2013
PHAR, the PHP .exe format
at Dutch PHP Conference 2012
Cranking Nginx up to 11
First Class APIs
at Dutch PHP Conference 2011
Think like an ant, distribute the workload
Plant Pyrus in your system - A guide to a plugin system
at Dutch PHP Conference 2010
Caching/Performance
at Dutch PHP Conference 2009