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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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C H A P T E R  27

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Scaling Drupal

by Károly Négyesi

To define scaling, let's look at a little café. When it opens up, because it's little, the owner does everything: she takes the order, prepares the drink, and takes the payment in exchange for the coffee. Some time passes and the café becomes popular so the owner hires a barista and a waiter. Now the waiter takes the order and gets the money. The barista gets a slip with the order, prepares the drink, and gives it to the customer. What you should notice here is that when one person did everything, the exchange of the money and the drink happened at the same time. But now the customer hands over ...

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