jm at jmason
May 18, 2011, 3:44 AM
Post #5 of 5
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Re: Spamassasin - SQLITE as storage database
[In reply to]
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On Wed, May 18, 2011 at 11:26, Mark Martinec <Mark.Martinec+sa [at] ijs> wrote:
> On Wednesday May 18 2011 09:42:55 monolit wrote:
>> >> do you have any experience with usage of SQLITE database as storage for
>> >> Spamassassin? Spamassassin uses Berkeley DB, but I need to replace it.
>> >> I could not find any manual, guide or just phorum discussion about
>> >> colaboration Sapmassassin with SQLITE. I apreciate each advice.
>> >
>> Thanks for your post. Unfortunately my boss wants to use just SQLITE.
>
>> Lawrence @ Rogers wrote:
>> > I have no experience with this, but I do have experience with using
>> > MySQL with InnoDB tables. The performance is actually much better than
>> > Berkley DBs.
>
> Bear in mind that MySQL with InnoDB (as well PostgreSQL) offer
> fine-grained locking at a record level, which SQLite does not
> (the last time I checked). It is very likely that SpamAssassin
> could use SQLite as user preferences database (i.e. read-only)
> with no problems, it is also very likely that the usage of
> SQLite for a r/w database such as Bayes and AWL will cause
> lock contention on a busy server.
iirc, Matt Sergeant looked into using SQLite early on, but abandoned
it due to the locking-related issues.
--j.
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