On Fri, 2008-04-18 at 22:58 -0400, Neil Joseph Schelly wrote: > On Friday 18 April 2008 09:59, Lloyd Kvam wrote: > > On Fri, 2008-04-18 at 09:38 -0400, Neil Joseph Schelly wrote: > > > I've resolved the performance problems with a > > > really cool dual-db setup I came up with that's giving me awesome > > > performance. > > > > That piques my interest. Is it an update server replicating to a > > reporting server or something more exciting? > > It's a setup with a dedicate-write database and a dedicated-read database. > My > assumption (which seems to be going well) is that the Bayesian database can > be a little out of date (hours or even a day) and still be very effective at > decision-making. So I dump the writeable database to the read-only database > at regular intervales
Was there any reason for not using the MySQL replication feature to copy from the writeable database to the read-only database? I rely on replication mostly for off-site backup, but I've read of people splitting databases as you have done for performance reasons. > and the SQL in SpamAssassin's BayesStore module was all > modified to do the write queries in one DB and the read queries in the other. > > I documented it with more detail on my site just a few minutes ago, with > graphs to demonstrate the improved performance: > http://www.jenandneil.com/node/59 > > If anyone sees any places I should expand on that, by all means let me know. > I'm pretty proud of the results. After it runs for a bit longer, I was going > to send it along to Apache/SpamAssassin as a feature request, suggestion. > -N -- Lloyd Kvam Venix Corp DLSLUG/GNHLUG library http://www.librarything.com/catalog/dlslug http://www.librarything.com/profile/dlslug http://www.librarything.com/rsshtml/recent/dlslug _______________________________________________ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
