On Mon, 2007-08-13 at 17:23 +0200, Geert Hendrickx wrote:
On Mon, Aug 13, 2007 at 06:06:38PM +0300, Timo Sirainen wrote:
So Dovecot remembers what fields client is interested of and when header is being parsed it caches everything that it knows the client wants.
For how long does dovecot remember which headers? e.g. what happens if a user switches to another mail client which downloads less headers? How long will the now unused headers still be indexed?
From TODO:
- compression should drop fields with last_used <
(latest_mail_index_date - month):)
Maybe I should finally implement this for v1.1.
Anyway there is already a difference between permanently cached fields and temporarily cached fields. With most clients (non-webmail, non-Pine) Dovecot uses the temporary rule and the fields get dropped the next time cache is compressed (which usually happens after enough messages are expunged). I should make the compression happen also once in a while to make sure that temporary fields are dropped..