Performance and Scalability

This module is for experienced users only. It requires manual configuration of settings.php and maybe also the database and the ability to set up and user subdomains

The split site module optimizes a Drupal site that uses a large number of modules (80 or more) by splitting into a number of smaller sites each using a subdomain. Unlike other multi-site options which use different databases or which split the sites into separate tables, this option minimizes the number of tables that are shared so that the site behaves more like one site.

Yet another caching system for Drupal with support of memcache, APC, database, file, redis, XCache engines.

More information:

18 Aug 2009 New Drupal "cache" module started.

The CouchDB module provides API access to any Couch Database. The API exposes a majority of the Database, Document, Design and Views API. The CouchDB module when enabled does not do anything. It provides a library to build additional functionality or applications.

The couchdb_watchdog module is a sample implementation of using Drupal with CouchDB.

Please help solidify the development release into a full 7.x release by logging issues and testing the module out.

This module provides integration between your Drupal site and Varnish cache, an advanced and very fast reverse-proxy system. Basically, Varnish handles serving static files and anonymous page-views for your site much faster and at higher volumes than Apache, in the neighborhood of 3000 requests per second.

This module provides admin-socket integration which allows Drupal to dynamically invalidate cache entries, and also lets you query the Varnish admin interface for status, etc.

Upgrade to the CDN module!

The Parallel module is now obsolete. The final version (1.0) doesn't do anything anymore, it simply migrates all settings to the CDN module when you run update.php. When you uninstall the Parallel module, all of Parallel's settings are deleted.
The CDN module contains a superset of the Parallel module's functionality, with a better UI, and a Drupal 7 port readily available.

Ajaxify Regions attempts to handle the problem of serving cached content for authenticated users. By default, page-level content is not cached for authenticated users because portions of the page layout may differ from one user to another. This module, while not currently addressing the needs of the content body, should allow full caching of the page using any full-page caching module (such as the authcache module) by replacing dynamic regions with ajax callbacks for user-specific - or otherwise uncacheable - content.

Seeking Co-Maintainer, please apply in the issue queue if interested

This module now works on windows servers too (get the dev version). Open admin/settings/dumper and fill in the override path of your mysqldump.exe (If using a wamp, it should be on the same directory of the mysql binaries). Also make sure the GZip compression option is turned off (I'll work on this soon).

This module aims for a quick and easy-to-use database dumper. Very useful on situations where you don't have access to command-line tools.

Using Cron Control, you'll be able to fine-tune Drupal's cron, with special features for clustered environments.

The Cleaner module allows the admin to set a schedule for clearing caches, watchdog, and old sessions.

There are still times and/or cache tables that don't get cleared in any of those scenarios. Many sites will not be impacted by this, but a few will (just search on drupal.org and you will see many posts from people having problems).