fast doveadm search results

[Vu Ngoc VU]

> Date: Thu, 19 Mar 2015 15:08:42
> From: Steffen Kaiser <skdovecot at smail.inf.fh-brs.de>
> Reply-To: dovecot at dovecot.org
> To: Vu Ngoc VU <vvu at mcra.fr>
> Cc: dovecot at dovecot.org
> Subject: Re: fast doveadm search results
> 
>
>> My goal is to be able to find mails quickly with "doveadm search".
>
> What information you are search for? Message-ID, subject, body text?
Thanks for your answer.
Yes, I only need doveadm to search for fields that are in envelope or headers.
Not the whole body part or the attachments.

> If your data is in the headers, check out:
>
> doveconf -a|grep -i cache
>
> mail_always_cache_fields =
> mail_cache_fields = flags
> mail_cache_min_mail_count = 0
> mail_never_cache_fields = imap.envelope
>
> e.g. put message-id into mail_always_cache_fields

Yes, as I didn't yet set anything, it looks like this.
If I record correctly, I've pasted it in my initial post.

OK, I'll try to change mail_always_cache_fields.