David Chandek-Stark wrote at 2005-5-12 15:31 -0400:
Dieter Maurer wrote:
Symptom:
When a new item is added to the RSS feed (b/c a news item was
published), my ZPT displays the RSS data inconsistently with each
browser refresh -- sometimes the new item appears, sometimes not.
A bug in RDFSummary which uses a ZODB cache to maintain
the fetched items.
Unfortunately, each connection has its own independent ZODB cache
Using a ZODB cache for this use case is both inefficient
and error prone.
You should contact the RDFSummary authors.
As mentioned in the original post, I am now using CMFSin and having the
smae problem. Are you saying that this is an issue with the design of
the product?
I am saying what I said: RDFSummary caches with _v_ variables
i.e. it uses a ZODB cache and ZODB caches are difficult to
synchronize between workers. This easily leads to such inconsistencies
as you have described them.
Other products may make the same error.
I do not know CMFSin. Therefore, I cannot tell you that it does.
But, it you see what you had described, there is a not so small
chance ...
--
Dieter
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