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From "Jon Moore (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HTTPCLIENT-975) add support to caching module for RFC 5861 (stale-on-error and stale-while-revalidate)
Date Tue, 14 Dec 2010 17:21:18 GMT

    [ https://issues.apache.org/jira/browse/HTTPCLIENT-975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12971323#action_12971323
] 

Jon Moore commented on HTTPCLIENT-975:
--------------------------------------

@Mohammed: patch checked in. I moved the acceptance tests from TestProtocolRecommendations
to a new test class called TestRFC5861Compliance, since I think we want to keep TestProtocolRecommendations
to those things specified in RFC2616.

@Mishu: go for the stale-while-revalidate patch.


> add support to caching module for RFC 5861 (stale-on-error and stale-while-revalidate)
> --------------------------------------------------------------------------------------
>
>                 Key: HTTPCLIENT-975
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-975
>             Project: HttpComponents HttpClient
>          Issue Type: New Feature
>          Components: Cache
>    Affects Versions: 4.1 Beta1
>            Reporter: Jonathan Moore
>            Assignee: Jon Moore
>             Fix For: 4.1.0
>
>         Attachments: stale-if-error.patch, stale-if-error.patch, stale-while-revalidate.patch
>
>
> These are Cache-Control extensions that allow an origin server to specify some additional
behavior for stale cache entries. Stale-on-error configurations allow a cache to continue
serving stale content for a certain period of time if a revalidation fails, and stale-while-revalidate
similarly allows revalidation to occur asynchronously. Some reverse proxies such as Squid
can be configured to understand these headers, which means that some origin servers are probably
sending them, and that we can likewise take advantage of them.

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