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Learn how Drupal's Gander performance testing framework is revolutionizing web performance optimization through automated testing integrated directly into CI systems. Discover real-world success stories of front-end and back-end performance improvements in Drupal Core and Drupal CMS, including how performance issues were identified, resolved, and verified through systematic testing approaches. Explore concrete examples of Core Web Vitals improvements achieved by reducing page weight, optimizing CSS and JavaScript loading, enhancing cache hit rates, reducing database queries, and eliminating unnecessary processing overhead. Examine Drupal's render cache system optimizations and understand how PHP Fibers integration addresses long-standing cold cache performance challenges. Analyze case studies from the Drupal CMS 1.0 development process demonstrating how early automated performance detection enabled rapid, targeted fixes before release. Gain practical insights for implementing similar performance testing strategies in contributed modules, site templates, and individual projects, with guidance on integrating performance testing into your organization's preferred CI platform or local development workflow.
