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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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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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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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: chemistry, chemistry blog, best chemistry blogs, chemical research, lab safety, academic politics, scientific publishing, organic chemistry, materials chemistry, physical chemistry, analytical chemistry, biochemistry, inorganic chemistry
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 : ChemBark is a blog about chemistry and the world of chemical research