[Dovecot] Using MySQL to store email?

[Marc Perkel]

Geo Carncross wrote:
> On Tue, 2006-06-06 at 08:25 -0700, Marc Perkel wrote:
>   
>> I'm suggesting it in addition to MBOX and MAILDIR. And of course if 
>> there's a MySQL version then other databases will follow. Just seems to 
>> me that if I were running a really BIG email operation that MySQL could 
>> have some serious benefits.
>>     
>
> Using a "big ol' SQL database" will ALWAYS give _worse performance_ than
> a specialized solution (like dbox), and will usually give _worse
> performance_ than a naive but still specialized solution (like maildir
> or mbox).
>   
Not true for "always". If you have 100,000 messages in a folder the 
database will win easy.
> SQL's strengths are mutability, not performance- regardless of what you
> or others might think. USUALLY the database performance is "good enough"
> for most applications- but that doesn't mean it's even remotely close to
> optimal.
>   
If you have a large system then what you might want is power and if you 
want speed you just spend more money for faster hardware.
> Nevertheless, DBMail exists- it's an SQL backed IMAP server, and its
> active- and supports MySQL (in addition to SQLite and PostgreSQL).
>   
I'd like to see Dovecot have that option as well.


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