LDA Indexing
============

Dovecot v1.0's deliver updates the main index file while message is being
saved. This is useful with<mbox> [MailboxFormat.mbox.txt] format, especially if
'mbox_very_dirty_syncs=no'. With <Maildir> [MailboxFormat.Maildir.txt] the
benefits of this are pretty small.

Dovecot v1.1's deliver updates also cache file, which can be very useful with
all mailbox formats. It means that when client wants to fetch the message's
metadata (e.g. some header fields) they're already found from the cache file
and Dovecot doesn't have to open and parse the message file. This reduces the
needed disk I/O and CPU usage.

See <IndexFiles.txt> for more information about what the index files contain. 

(This file was created from the wiki on 2009-02-04 04:42)
