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From "Felix Berger (JIRA)" <j...@apache.org>
Subject [jira] Closed: (HTTPCLIENT-1010) add an X-From-Cache header to responses that are served from the cache
Date Tue, 12 Oct 2010 18:39:34 GMT

     [ https://issues.apache.org/jira/browse/HTTPCLIENT-1010?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Felix Berger closed HTTPCLIENT-1010.
------------------------------------

    Resolution: Duplicate

> add an X-From-Cache header to responses that are served from the cache
> ----------------------------------------------------------------------
>
>                 Key: HTTPCLIENT-1010
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1010
>             Project: HttpComponents HttpClient
>          Issue Type: New Feature
>          Components: Cache
>    Affects Versions: 4.1 Alpha2
>            Reporter: Felix Berger
>         Attachments: x-from-cache.patch
>
>
> This allows the caller to find out if an actual connection has been made. One possible
way of doing this is to add a custom header to resonses generated from the cache. The attached
patch adds the header:
> X-From-Cache: true
> The use case where this is needed is when you want to know whether you are actually connected
to the internet or whether contacted server is alive without generating extra out of order
requests.
> I was also looking if it was possible to detect this by looking at the Via header, but
it looks like the same header is added whether the response is served from the backend or
the local cache.

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