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