Vary on CDN Handbookhttps://www.cdnhandbook.com/tags/vary/Recent content in Vary on CDN HandbookHugo -- 0.148.2enThu, 13 Aug 2026 00:00:00 +0200CDN Cache Keys and the Vary Headerhttps://www.cdnhandbook.com/guides/cache-keys-vary/Thu, 13 Aug 2026 00:00:00 +0200https://www.cdnhandbook.com/guides/cache-keys-vary/Design CDN cache keys and Vary headers without fragmenting the cache. Covers query strings, cookies, language variants, devices, and safe testing.