under heavy load of my zope application I got the following error:

  WARNING ZopePublication Competing writes/reads at ... database
conflict error (oid 0x03a272, class BTrees.OIBTree.OIBucket, serial this
txn started with 0x0376b0db577575cc 2008-06-24 06:51:20.498163, serial
currently committed 0x0376b0dc374f1244 2008-06-24 06:52:12.963017)

This is due to many reads and writes (adding objects) to a BTreeFolder.
So my questions are:
1. How can I increase the number of retries to resolve the conflict?
2. I think this might be a design problem of my application; should I
use another backend for storing such data (sql, etc.)?

Thanks for help. Best,

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