nginx 0.7.8 has been released with a new, interesting feature - a native XSLT module:

The module is filter that transforms XML using one or more XSLTs. The module requires libxml2/libxslt libraries.

Combined with the new $arg_param variable expansion for GET requests makes it a powerful enough feature to replace simple uses of PHP or other scripting languages.

caching nginx

Alexander of Affection Code published an interesting comparison between nginx and HAProxy for load balancing application servers.

haproxy http nginx