Tag1 Consulting is focused on improving Drupal's performance and scalability. We also believe that when information is freely shared, everyone wins. Toward these ends, we are working on an online book titled, "Drupal Performance and Scalability". The book is divided into five main sections, Drupal Performance, Front End Performance, Improved Caching and Searching, Optimizing the Database Layer, and Drupal In The Cloud. The book is primarily aimed toward users running Drupal on the LAMP stack, with chapters applicable to everything from low-end shared hosts to large-scale multi-server installations.

By publishing on-line, we aim to encourage you to participate in the book writing process as an editor and a technical reviewer. You will currently find the book's complete outline online, along with descriptions of each planned section and chapter. As the book evolves, it will continue to be updated online in real time. We encourage you to post comments with suggestions, critical feedback, grammatical corrections, or anything else relevant to our ongoing effort.

We are honored to have received praise from Drupal founder Dries Buytaert, who said in his blog (emphasis added):

It is not always easy to scale Drupal -- not because Drupal sucks, but simply because scaling the LAMP stack (including Drupal) takes no small amount of skill. [...] Either you can do all of the above yourself, or you outsource it to a company that knows how to do this for you. Both are non-trivial and I can count the number of truly qualified companies on one hand. Tag1 Consulting is one of the few Drupal companies that excel at this, in case you're wondering.

The Drupal Performance Agency is a group of independent companies and consultants who are dedicated to improving Drupal performance.

Mission:

• To provide unparalleled, on-demand performance consulting for Drupal-based projects
• To improve the Drupal project to scale to support extremely high-demand environments
• To assist in systems architecture planning for organizations deploying high-demand Drupal systems
• Document and publish performance architectures and best practices
• Work on high performance projects because it's lots of fun

The performance checklist is designed to help you define an effective strategy for scaling your website.