Meta keywords
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Meta keywords are types of meta tags in the HTML source code of a webpage. They describe the content of a website shortly and concisely,this website is using the following keywords: sidemount, cave diving, cenote diving, sidemount cave diving, full cave, ccr rebreather cave diving, cenote diving, playa del carmen, mexico
No Cache Content
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Forces caches to submit the request to the origin server for validation before releasing a cached copy.
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Must Revalidate HTTP Cache-Control
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Indicates that once a resource has become stale (e.g. max-age has expired), a cache must not use the response to satisfy subsequent requests for this resource without successful validation on the origin server.
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NO Transform HTTP Cache-Control
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No transformations or conversions should be made to the resource. The Content-Encoding, Content-Range, Content-Type headers must not be modified by a proxy.
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Cache-Control Header Max-Age
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Specifies the maximum amount of time a resource will be considered fresh. Contrary to Expires, this directive is relative to the time of the request. this website is having max-age=0 secs.
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HTTP Upgrade Header - HTTP/2
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The HTTP Upgrade mechanism is used to establish HTTP/2 starting from plain HTTP. The client starts an HTTP/1.1 connection and sends an Upgrade: h2c header. If the server supports HTTP/2, it replies with HTTP 101 Switching Protocol status code. The HTTP Upgrade mechanism is used only for cleartext HTTP2 (h2c). In the case of HTTP2 over TLS (h2), the ALPN TLS protocol extension is used instead.
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Meta Description
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A meta description is a 160-character snippet, a meta tag in HTML, that summarizes a page`s content. this website is having meta description of the following : Quality Cenote and cave diving instruction, support and guiding in Mexico at ProTec Dive Center in Playa del Carmen with the highest standards and most complete Cenote and Cave diving services available in CCR Rebreather Cave diving, Technical diving, Instructor training, Sidemount cave diving and Side Mount dive equipment.