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Groups > comp.lang.java.programmer > #28485

Re: invalidating caches

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Roedy Green <see_website@mindprod.com.invalid> wrote:
> 
> What I wondered is, does the server have a way of broadcasting a cache
> invalidate to ensure the new version is seen immediately?
> 
> If so, can you do it from Java?
>

Broadcasting? No. 

As with anything else in the HTTP protocol, there is no way for the
server to initiate communication with the client.

You can, however, have the _client_ request that intermediate caches
revalidate the freshness of the requested resource with the server, by
setting appropriate Cache-Control headers in the HTTP request.

-- 
Leif Roar Moldskred

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Thread

invalidating caches Roedy Green <see_website@mindprod.com.invalid> - 2014-05-15 02:26 -0700
  Re: invalidating caches leif.roar@invalid.com (Leif Roar Moldskred) - 2014-05-15 04:56 -0500
  Re: invalidating caches Jeff Higgins <jeff@invalid.invalid> - 2014-05-15 16:36 -0400
    Re: invalidating caches Roedy Green <see_website@mindprod.com.invalid> - 2014-05-16 01:58 -0700
      Re: invalidating caches Sarah Connor <s.connor@gmail.invalid> - 2014-05-16 10:31 +0000
        Re: invalidating caches "Chris Uppal" <chris.uppal@metagnostic.REMOVE-THIS.org> - 2014-05-17 11:06 +0100

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