HTTP Headers

HTTP Header	Set by	Where	Description
X-frontcache.trace	Client	request	when true - response headers have performance statistics for request and includes
X-frontcache.site-key	Client	request	authentication key for invalidation requests
X-frontcache.component.tags	Origin	response	set invalidation tags for cache, optional
X-frontcache.component.maxage	Origin	response	set time to live in cache
X-frontcache.component.cache-level	Origin	response	set cache level - L1 / L2, optional, default - L2
X-frontcache.component.refresh	Origin	response	set refresh type for cached entry - regular / soft, optional, default - regular
X-frontcache.id	Frontcache	response	frontcache server id (useful in case of geo balancing e.g. R53)
X-frontcache.request-id	Frontcache	response	request UUID - the same value for top level request and all includes
X-frontcache.client-ip	Frontcache	request	set in frontcache server for origin application
X-frontcache.trace.request	Frontcache	response	performance statistics for request and includes
X-frontcache.fallback-is-used	Frontcache	response	is true when response has fallbacks included
X-frontcache.dynamic-request	Frontcache	request	internal use
X-frontcache.soft-refresh	Frontcache	request	internal use
X-frontcache.async-include	Frontcache	request	internal use
X-frontcache.include-level	Frontcache	request	internal use