[Zope-CMF] Re: Re: Re: Re: CachingPolicyManager improvements

[Geoff Davis]

On Tue, 06 Sep 2005 11:48:30 -0500, Paul Winkler wrote:

> limi wrote:
>> On Tue, 06 Sep 2005 06:18:30 +0200, Geoff Davis <geoff at phds.org> wrote:
>>
>>> RAMCacheManager has no good way to purge stale content.
> 
> ZCacheable_invalidate()?
> (granted, in practice it's currently broken for skins...
> http://www.zope.org/Collectors/CMF/343 )
> 

It's not just that RAMCacheManager has bugs.  ZCacheable_invalidate, when
called, invalidates everything in the cache associated with a given page
template.  That means that if you cache, say, a template that provides
a view of a document, the only way to invalidate the view for a single
document is to invalidate the view of _all_ documents.  Not very useful.