cyrus.expunge/cyrus.cache mistmatch on replica

David Carter dpc22 at
Mon Sep 24 03:53:14 EDT 2007

On Mon, 24 Sep 2007, Bron Gondwana wrote:

> Any reason to actually keep them though?  It's not as if unexpunge is 
> common enough to be worth optimising, and they're all auto-generated 
> content that we can recreate from the message if needed.

My original motivation was user access to expunged messages and deleted 
mailboxes. But Cyrus 2.3, doesn't do this, so you are quite correct.

Not having to rewrite the entire cyrus.cache file on every expunge is a 
fairly substantial performance boost. We can keep this benefit by leaving 
unreferenced junk in the cache file and then garbage collecting (rewrite 
on expunge and/or cyr_expire) when the file reaches some threshold.

David Carter                             Email: David.Carter at
University Computing Service,            Phone: (01223) 334502
New Museums Site, Pembroke Street,       Fax:   (01223) 334679
Cambridge UK. CB2 3QH.

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