Re: [Babeldoc-devel] Possible changes to SQL Config immediate write

[Michael A. <mic...@ze...>]

Hi,

Excellent, this is exactly the kind of information I was looking for.  I
never thought about the case of clustered servers.  I'll work out how to
build that into the design, and see what I come up with.

Cheers...


MikeA


On Sun, 2004-03-21 at 11:16, Dejan Krsmanovic wrote:
> Hi Mike,=20
> First of all, I must say that I have never used that
> code so I am probably not aware of all issues
> regarding to SQlConfig. I know that Erik has some
> problems with initial SqlConfig implementation since
> his system was required to run in clustered enviroment
> where all nodes should be aware of changes made in one
> node (without restarting). So, (if I remember well) he
> dropped all cache usage in SqlConfig and every change
> made in configuration is immediatelly written to
> database.=20
>=20
> Now, I am not sure if this could be done better.
> Perhaps, you could introduce some new config option
> that would enable cache usage in SqlConfig.
>=20
> I am not sure if this is all true, but you could
> search mailing list. Also, I guess that old
> SqlConfig(Service) implementation is still in CVS so
> you can look at the CVS history for these files.=20
>=20
> regards,
> Dejan
>=20
> --- Michael Ansley <mic...@ze...> wrote:
> > Hi,
> >=20
> > When a setString() is called on a SQLConfig object,
> > it immediately
> > passes the values to it's server (a
> > SQLConfigService, funnily enough),
> > which writes it to the database.  In addition, the
> > saveConfig method on
> > the SQLConfigService class doesn't do anything.
> >=20
> > I was thinking, it makes more sense to me if the
> > setString() call does
> > *not* pass the call to the service object and save
> > immediately to the
> > database, but simply changes it's own cache value.=20
> > Then, when some or
> > other client code calls to saveConfig() on the
> > SQLConfigService, that's
> > when the service retrieves the cached updates and
> > the data gets written
> > back to the database.  That way it can all be done
> > in a single
> > transaction, as well.
> >=20
> > Thoughts, please, anybody who cares, one way or the
> > other...
> >=20
> > Cheers...
> >=20
> >=20
> > MikeA
> >=20
> >=20
> >=20
>=20
> > ATTACHMENT part 2 application/pgp-signature
> name=3Dsignature.asc
>=20
>=20
>=20
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