Age HTTP Header - Original Server Response
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The Age header contains the time in seconds the object has been in a proxy cache.
Private Cache-Control Header
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The Cache-Control general-header field is used to specify directives for caching mechanisms in both requests and responses. Caching directives are unidirectional, meaning that a given directive in a request is not implying that the same directive is to be given in the response.
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Proxy Revalidate HTTP Cache-Control
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Same as must-revalidate, but it only applies to shared caches (e.g., proxies) and is ignored by a private cache.
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Cache-Control Header Precedence Max-Age
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Takes precedence over max-age or the Expires header, but it only applies to shared caches (e.g., proxies) and is ignored by a private cache.this website is having s-max-age=0 secs.
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Pragma Header - backwards compatibility with HTTP/1.0
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The Pragma HTTP/1.0 general header is an implementation-specific header that may have various effects along the request-response chain. It is used for backwards compatibility with HTTP/1.0 caches where the Cache-Control HTTP/1.1 header is not yet present.
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X-Cache HTTP Header
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The resource was not in the website cache, and was pulled from the origin server like Varnish servers.
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Vary Header Accept-Encoding
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The Accept-Encoding request HTTP header advertises which content encoding, usually a compression algorithm, the client is able to understand. Using content negotiation, the server selects one of the proposals, uses it and informs the client of its choice with the Content-Encoding response header.
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