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The Definitive Guide to Drupal 7 by Károly Négyesi, Claudina Sarahe, Dani Nordin, Ed Carlevale, Benjamin Melançon, Amye Scavarda, Ryan Szrama, Kay VanValkenburgh, Brian Travis, Greg Anderson, Robert Douglass, Roy Scholten, Peter Wolanin, Susan Stewart, Mike Gifford, Forest Mars, Sam Boyer, Florian Lorétan, Allie Micka, Jake Strawn, Stefan Freudenberg, Dmitri Gaskin, Bojhan Somers, Albert Albala, George Cassie, Kasey Qynn Dolin, Jacine Luisi, Dan Hakimzadeh, Robin Monks, Nathaniel Catchpole, Stéphane Corlosquet, Mike Ryan, Michelle Lauer, Greg Stout

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Profiling Drupal and Optimizing Performance

by Nathaniel Catchpole and Stefan Freudenberg

You don't usually need to worry about performance when developing Drupal sites and modules; instead, you should focus on clean, functional design and readability of your code. However, if your site experiences more traffic than usual or it somehow feels slow, there are ways to analyze and improve the situation.

User-Perceived Performance

When it comes to web sites, the perceived performance is key to user acceptance. In the words of Roy T. Fielding, a central figure in defining the modern web's architecture, user-perceived performance ...

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