Several years ago, we added a "tid" cache, that cached current ttransaction ids (tids) for objects. The intent was to speed both stores and full cache verification. We've since realized that full verification is a bad idea for databases large enough that caching is needed. It's not clear how much benefit the cache provides when storing data.
Recently, we've had multiple serious failures due to memory errors occurring when the cache became too big. I recently made a change that makes the errors somewhat less likely to occur (by using a BTree rather than a dictionary), but the cache can still grow unacceptably large. Unless there are strong objections, I'm going to remove the tid cache in ZODB 3.8.1. Jim -- Jim Fulton Zope Corporation _______________________________________________ For more information about ZODB, see the ZODB Wiki: http://www.zope.org/Wikis/ZODB/ ZODB-Dev mailing list - ZODB-Dev@zope.org http://mail.zope.org/mailman/listinfo/zodb-dev
