[Dovecot] mbox vs. maildir storage block waste

[Timo Sirainen]

On 30.10.2012, at 2.16, Christoph Anton Mitterer wrote:

> Have you ever thought about adding a "real" DB backend? Nothing against
> dbox... :) ... and I have no performance comparison of dbox with what
> could be done with a DBMS... but the advantage of the later would be
> that you get all fancy features from database systems for free... like
> fast indexing, online replication, etc. p..
> 
> One might even reuse something like AOX for this.

SQL indexes aren't very helpful for IMAP-like data. It would be fun to some day have SQL backend in Dovecot (there already is read-only INBOX-only SQL backend), but I don't expect it to have very good performance.