Remember that the CAPTCHA module disables page caching
By design, the Drupal CAPTCHA module disables page caching for pages it is enabled on.So if you enable CAPTCHA for user login and/or registration forms, those pages will not be cached. This is often...
View ArticleDrupal site excessive memory usage traced to APC and php5-memcached
We were recently troubleshooting a client site running Drupal 7.x, and main complaint was high memory usage on all the site's pages.We were able to diagnose and solve two main causes that range from...
View ArticleMongoDB as a caching solution for Drupal 7
MongoDB is a NoSQL database that has Drupal integration for various scenarios. One of these scenarios is using MongoDB as the caching layer for Drupal. This article describes what is needed to get...
View ArticleInstalling and Configuring Redis for Drupal 7, and other Memcached Alternatives
For years, we have been using and recommending memcached for Drupal sites as its caching layer, and we wrote several articles on it, for example: configuring Drupal with multiple bins in...
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