Best practices for getting the most out of your Drupal site and servers.
Károly (Chx) Négyesi
A modern Drupal scalability stack now includes nginx, Webdis and Redis.
An overview of Acquia Insight: performance, security, and Drupal best-practices information about your website.
The article discusses front end performance, it's importance including highlights on mobile devices, points to some helpful tools, and ends with 4 practical tips anyone can apply to their website.
How caching can improve the performance of your website.
A comprehensive overview of the performance and scalability improvements in Drupal 7.