[Dovecot] Persistence of UIDs

[Timo Sirainen]

On 25.1.2012, at 15.34, Jean-Daniel Beaubien wrote:

>>> I am thinking about building some form of webmail specialized for some
>>> specific business purpose and I am thinking of building a sort of cache
>> in
>>> a DB by storing the email addr, date, subject and UID for quick lookups
>> and
>>> search of correspondance.
>> 
>> Dovecot should already have such cache. If there are problems with that, I
>> think it would be better to fix it on Dovecot's side rather than adding a
>> second cache.
>> 
> 
> Very true.  Has there been many search/index improvements since 1.0.9? I
> read thru the release notes but nothing jumped out at me.

Disk I/O usage is the same probably, CPU usage is less in newer versions.

>>> I am doing this because I am having issue with multiple people searching
>>> thru email folders that have 100k+ emails (which is another problem in
>>> itself, searches don't seem to scale well when folder goes above 60k
>>> emails).
>> 
>> Maybe enable fts-solr or fts-lucene? (Both work much better in v2.1.)
>> 
> 
> I was under the impression that lucene was for full-text search. I'm just
> doing simple from/to field searches.

In v2.1 from/to fields are also searched via FTS.