The Drupal 7 Database API provides a standard, vendor-agnostic abstraction layer for accessing database servers. The API is designed to preserve the syntax and power of SQL as much as possible, but also: - to support multiple database servers easily;- to allow developers to leverage more complex functionality, such as transactions;- to provide a structured interface for the dynamic construction of queries;- to enforce security checks and other good practices;- to provide modules with a clean interface for intercepting and modifying a site's queries. The main Database API documentation is derived directly from comments in the code. This Handbook section augments those API docs by providing a tutorial for module authors who wish to interact with the database system, as well as an overview of the system from an administrator's point of view. Note that this Handbook may not cover every feature of the API. The Database API was built with object-oriented design concepts, and this document therefore assumes at least a partial familiarity with those concepts. However, most common operations have a procedural front-end as well, and developers may choose to use the procedural style for more readable code.

This article is all about configuring Varnish optimally for these high-availability setups, in which multiple dedicated back-end servers are protected from heavy traffic by Varnish serving cached content to the outside world. We also have some neat tricks for server maintenance, optimizing your cached content, and configuring Varnish to act as a fail-safe even if all of your back-end servers go down. Includes information on Varnish Grace mode.

Information on Varnish Grace and Saint modes. "A key feature of Varnish is its ability to shield you from misbehaving web- and application servers."

Using Display Suite to create custom teaser displays.

In order to make a private download truly private, you need to move the files directory (usually under sites/default/files) into a new place outside the Drupal installation. It should be in a place the user can't access via browser.

This screencast series introduces Views from the very basics, and presents more or less all the concepts you need to know when configuring Views. It does not by any mean cover everything about Views - it does not, for example, cover theming Views or coding for Views - but it should provide you will all the necessary tools for going on and explore the Views universe yourself.

Corolla is a highly stylized colorable theme for Drupal 7 with many theme settings to allow you to completely customize the look and feel of your site. The 7.x-2.x version is a subtheme of Adaptivetheme 7.x-2.x which includes a powerful new layout engine with support for mobile.

A series of article from NodeOne about the Page Manager, including using Panels.

The Janrain Engage module (formerly RPX) integrates Drupal sites with the powerful Janrain Engage service. Using Janrain Engage, Drupal sites can authenticate new and existing users with popular social networks, map user profile data from these websites to Drupal fields, and share Drupal content with a user's friends on their social networks. In particular, the module helps Drupal websites quickly and seamlessly integrate with 21 social networks and service providers. This includes Facebook, Twitter, Google, Yahoo!, LinkedIn, Myspace, AOL, PayPal, and Windows Live (see the complete list below). Instead of having to integrate with each of these sites on your own (and manage API changes over time), Janrain Engage does the heavy lifting for you. Using this module, you can get setup in under 10 minutes. The result is an accelerated user registration process, an enhanced ability to gather user data, and increased site traffic from the viral promotion of your content.

This is the landing page for the Deploy module documentation. The Deploy module is designed to allow developers to easily stage Drupal content from one site to another. Deploy automatically manages dependencies between objects (like node references). It is designed to have a rich API which can be easily extended to be used in a variety of situations.