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https://issues.apache.org/jira/browse/HTTPCLIENT-2273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17720820#comment-17720820
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Julian Reschke commented on HTTPCLIENT-2273:
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Note: Caching nowadays is specified in RFC 9111.
> Improve handling of "no-cache" directive with specified header fields
> ---------------------------------------------------------------------
>
> Key: HTTPCLIENT-2273
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-2273
> Project: HttpComponents HttpClient
> Issue Type: Improvement
> Reporter: Arturo Bernal
> Priority: Major
>
> Currently, the Apache HttpComponents client does not fully handle the
> "no-cache" directive with specified header fields as outlined in RFC 7234.
> This may lead to incorrect caching behavior when the "no-cache" directive is
> used with specific header fields.
> The goal of this ticket is to enhance the handling of the "no-cache"
> directive to ensure that specified header fields are not sent in a response
> to a subsequent request without successful revalidation with the origin
> server. This allows an origin server to prevent the re-use of certain header
> fields in a response, while still allowing caching of the rest of the
> response.
> To achieve this, the following changes should be made:
> # Update the caching module to identify and handle "no-cache" directives
> with specified header fields.
> # Revalidate the response with the origin server when the specified header
> fields are present in a cached response, to ensure that they are not reused
> without successful revalidation.
> # Ensure that the rest of the response is still cacheable when the specified
> header fields are present, as long as the response complies with other
> caching requirements.
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