From: zope-bounces+mtiller=ford.com@zope.org [mailto:zope- Subject: Re: [Zope] zope performance issues
On Thu, May 20, 2004 at 10:22:28AM -0400, Tiller, Michael (M.M.) wrote:
While we are on the subject of zope performance issues, are all you Zope people aware (I searched the mailing list and couldn't find mention of it) that some people in the Plone community (including myself) have taken to uncommenting a line in the AcceleratedHTTPCacheManager.py file of Zope 2.7 because it seems to hamper caching in proxy servers?
News to me. And AFAICT, nobody has ever filed this as an issue in the collector. Bugs don't get fixed if they're not reported!
I agree completely. That is why I brought it up. It was not clear to me the extent to which this was a known issue. I just wanted to check here to see if people considered it a bug/issue or whether there was a good reason for leaving the line commented (seems suspicious right...that the line is just commented out?).
I'm filing it now: http://collector.zope.org/Zope/1345
Great thanks. I didn't intend to put you to that much trouble. I just didn't want to clog the collector with something unless it was a legitimate issue.
BTW, given that you're using Plone/CMF, why not use the Caching Policy Manager? It does set the "Last-Modified" header.
I do. The problem (at least as I understand which could be not at all) is that it doesn't work for all types, e.g. Ivo van der Wijk wrote:
Both 'Profiling and caching' and 'HighPerformanceZope' claim you can get CCPM to cache images. However, I've been unable to get this to work, and after diving into CMFCore, I noticed that only FSPageTemplate has a hook into caching_policy_manager. Are these documents wrong on this point, or am I simply missing something?
Also, I think using CPM requires a hack as well (changing the global cache settings) to get rid of a Pragma in the headers. Finally, I found it very hard to find good documentation on the CPM (eventually I did though).
Paul Winkler http://www.slinkp.com
-- Mike