# Caching

- [Edge Cache Expiration](/products/performance-cdn/static-content-delivery/advanced-configuration/caching/edge-cache-expiration.md): Learn how to configure how long content remains cached on CDN edge servers.
- [Browser Cache Rule](/products/performance-cdn/static-content-delivery/advanced-configuration/caching/browser-cache-rule.md): Configure browser-side caching behavior for different resource types using Browser Cache Rules.
- [Query String Caching](/products/performance-cdn/static-content-delivery/advanced-configuration/caching/query-string-caching.md): Control how query strings affect CDN cache behavior for dynamic or parameterized URLs.
- [ETag Verification](/products/performance-cdn/static-content-delivery/advanced-configuration/caching/etag-verification.md): Validate cached content using the ETag response header so the CDN can detect when the origin object has changed.
- [Error Status Code Cache Expiration](/products/performance-cdn/static-content-delivery/advanced-configuration/caching/error-status-code-cache-expiration.md): Configure how long specific HTTP error responses remain cached on CDN edge servers.
- [Shared Cache](/products/performance-cdn/static-content-delivery/advanced-configuration/caching/shared-cache.md): Define whether a CDN resource uses its own cache or shares a common cache structure across multiple accounts using the Domain Cache Key.
- [Stale Cache](/products/performance-cdn/static-content-delivery/advanced-configuration/caching/stale-cache.md): Serve stale cached content when the origin returns specific HTTP error responses or enters an Updating state
- [Robots.txt File](/products/performance-cdn/static-content-delivery/advanced-configuration/caching/robots.txt-file.md): Define how the CDN serves the robots.txt file to control how search engines crawl and index your content.
- [Range Based Caching](/products/performance-cdn/static-content-delivery/advanced-configuration/caching/range-based-caching.md): Cache partial content based on byte ranges so the CDN can serve only the requested portions of large files.
- [Mobile Device Cache](/products/performance-cdn/static-content-delivery/advanced-configuration/caching/mobile-device-cache.md): Define device-based caching behavior to create separate cached versions for mobile, tablet, and desktop clients.