> RackCache is an open-source HTTP caching layer for Ruby Rack applications. Learn what it does on a website and how it relates to cookies and GDPR consent. > > Canonical: https://www.flowconsent.com/en/services/cdn/rackcache CDN # RackCache Unclassified · [Official website](https://github.com/rtomayko/rack-cache) Rack::Cache is an open-source HTTP caching layer for Ruby applications built on Rack, such as Ruby on Rails or Sinatra apps. Created by Ryan Tomayko, it sits in front of the application and stores responses according to standard HTTP cache headers to speed up repeat requests. It works on the server side and is not a tracking tool. [Block RackCache until consent](https://app.flowconsent.com/auth/sign-up?utm_source=flowconsent.com\&utm_medium=referral\&utm_campaign=cdn) · [Scan my site](https://www.flowconsent.com/en/scan) At a glance - Category [CDN](https://www.flowconsent.com/en/services/cdn) - Consent Unclassified - Prior consent Required - Documented cookies 0 Compliance ## RackCache and the GDPR RackCache is classified as “Unclassified”. On a site that targets European visitors, it must only load after the visitor consents, and it must be listed in your cookie policy. Cookies and trackers ## What RackCache sets and contacts The cookies of RackCache are not documented in the catalog yet. To see what is actually set on your site, run a free scan. [Scan my site](https://www.flowconsent.com/en/scan) Same category ## More services: CDN [See the whole category](https://www.flowconsent.com/en/services/cdn) ### [Azure Front Door](https://www.flowconsent.com/en/services/cdn/azure-front-door) [Azure Front Door is a marketing platform that equips businesses with tools to amplify their digital presence and drive customer acquisition. It supports audience segmentation, campaign automation, and cross-channel engagement. Azure Front Door provides real-time analytics and reporting dashboards for performance measurement and strategy optimization. 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Trusted by businesses worldwide, Ionicons helps organizations maintain robust websites that meet user expectations and technical requirements.](https://www.flowconsent.com/en/services/cdn/ionicons) [CDN](https://www.flowconsent.com/en/services/cdn/ionicons) · ### [Cloudinary](https://www.flowconsent.com/en/services/cdn/cloudinary) [Cloudinary is a versatile web technology that supports digital platforms with specialized functionality and enhanced capabilities. It provides robust tools and services that integrate with modern websites and applications seamlessly. Cloudinary is designed to improve operational efficiency, user experience, and digital performance. Trusted by developers and businesses alike, Cloudinary offers reliable solutions that scale with organizational needs and evolving web standards.](https://www.flowconsent.com/en/services/cdn/cloudinary) [CDN](https://www.flowconsent.com/en/services/cdn/cloudinary) · ### [Hyperspeed](https://www.flowconsent.com/en/services/cdn/hyperspeed) [Hyperspeed is a digital analytics solution that helps businesses measure and understand their online performance through comprehensive data collection and analysis. It provides visitor tracking, behavioral insights, and conversion metrics across websites and applications. Hyperspeed supports custom event tracking, audience segmentation, and automated reporting. With intuitive dashboards and visualization tools, Hyperspeed enables informed decisions that improve experience and drive results.](https://www.flowconsent.com/en/services/cdn/hyperspeed) [Analytics](https://www.flowconsent.com/en/services/cdn/hyperspeed) · ### [Varnish](https://www.flowconsent.com/en/services/cdn/varnish) [Varnish is a web performance optimization tool that helps websites load faster by implementing caching, lazy loading, and resource optimization techniques. It automatically compresses and minifies CSS, JavaScript, and images. Varnish improves Core Web Vitals scores, enhances user experience, and boosts search engine rankings through intelligent optimization strategies. With easy implementation and real-time monitoring, Varnish delivers measurable speed improvements.](https://www.flowconsent.com/en/services/cdn/varnish) [CDN](https://www.flowconsent.com/en/services/cdn/varnish) ## Make your site compliant today. Free up to 25,000 sessions a month. 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