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http://jira.magnolia-cms.com/browse/MAGNOLIA-2478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=22083#action_22083
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Matteo Pelucco commented on MAGNOLIA-2478:
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Done some tests, it seems to go better on 3.6.5.
The system behaves as expected with cache refresh: the If-modified-since header
is not present anymore (still rpesent on 3.6.3), IE6 refresh everytime the
content. As I said, everytime, even when expiration policy is set to be 30
minutes.
Strange..
But tomorrow I will investigate better and let you know.
> SetExpirationHeaders fails to disable browser caching for Firefox 3
> -------------------------------------------------------------------
>
> Key: MAGNOLIA-2478
> URL: http://jira.magnolia-cms.com/browse/MAGNOLIA-2478
> Project: Magnolia
> Issue Type: Bug
> Components: cache
> Affects Versions: 3.6.4
> Reporter: Philippe Marschall
> Assignee: Grégory Joseph
> Priority: Minor
> Fix For: 4.0, 3.6.4, 3.6.5
>
> Attachments: CacheHeadersFilter.patch, CACHING under Magnolia
> 3.6.3.pdf, SetExpirationHeaders.patch
>
>
> If we use the BrowserCachePolicy Never Firefox 3 still caches the page for a
> short amount of time. If we add "no-store" value for the Cache-Control header
> Firefox does no longer cache the page.
> Our code looks like this:
> {code}
> public void processCacheRequest(HttpServletRequest request,
> HttpServletResponse response,
> FilterChain chain,
> Cache cache,
> CachePolicyResult cachePolicyResult) throws IOException,
> ServletException {
> BrowserCachePolicy browserCachePolicy =
> this.getCacheConfiguration().getBrowserCachePolicy();
> BrowserCachePolicyResult clientCacheResult =
> browserCachePolicy.canCacheOnClient(cachePolicyResult);
> if (clientCacheResult.getExpirationDate() < 0) {
> response.setHeader("Pragma", "no-cache");
> response.setHeader("Cache-Control", "no-cache, no-store");
> response.setDateHeader("Expires", 0L);
> } else {
> final long maxAgeSeconds = (clientCacheResult.getExpirationDate() -
> System.currentTimeMillis()) / 1000;
> response.setHeader("Pragma", "");
> response.setHeader("Cache-Control", "max-age=" + maxAgeSeconds + ",
> public");
> response.setDateHeader("Expires",
> clientCacheResult.getExpirationDate());
> }
> }
> {code}
> We haven't yet tested with other browsers.
> There are some other issues we have with SetExpirationHeaders:
> * it tests for BrowserCachePolicyResult identity instead of using the return
> value of #getExpirationDate
> * it sets the Expires header twice, to two different values
> I'll attach a patch later this day.
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