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Cache key and origin requests We recommend using a cache policy and origin request policy to control the cache key and origin requests. Cache policy and origin request policy (recommended) Legacy cache settings Headers Choose which headers to include in the cache key. Include the following headers Add header Select an existing header or create a custom header. (max 25) Select headers pd_logged X Accept X CloudFront-Viewer-Country X pd_crawler X CloudFront-Is-Tablet-Viewer X CloudFront-Is-Mobile-Viewer X User-Agent X CloudFront-Is-SmartTV-Viewer X Host X x-amzn-waf-bot-cat-search-engine X X-Pd-Controls X X