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From "Oleg Kalnichevski (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HTTPCLIENT-427) Implement a cache to perform real request only when needed
Date Tue, 04 May 2010 12:55:09 GMT

     [ https://issues.apache.org/jira/browse/HTTPCLIENT-427?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Oleg Kalnichevski updated HTTPCLIENT-427:

    Attachment: HTTPCLIENT-427-immutable-cachenentry.patch

Dave, Joe

I could not fully complete the changes that I had in mind. So far I managed to have made all
variables in the CacheEntry class final which helps a great deal to ensure thread safety of
the class, but I was unable to make it truly immutable. Variant URIs can still be mutated
by multiple threads leading to a race condition. I have also failed miserably trying to wrap
my head around EasyMock which turned out to be far from easy. One of the test cases still
fails after my changes and I was not able to fix it nor to fully understand why it is failing
in the first place. I think it is better if you take over from here and incorporate the patch
(attached) into your change set.



> Implement a cache to perform real request only when needed
> ----------------------------------------------------------
>                 Key: HTTPCLIENT-427
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-427
>             Project: HttpComponents HttpClient
>          Issue Type: Improvement
>          Components: HttpClient
>         Environment: Operating System: Linux
> Platform: PC
>            Reporter: Marc Guillemot
>             Fix For: 4.1 Alpha2
>         Attachments: caching_client.zip, HTTPCLIENT-427-immutable-cachenentry.patch,
> Browsers may cache received content according to the values of different
> response headers. It would be great if HttpClient could do the same.

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