Re: Home-brewed table syncronization
От | Cliff Wells |
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Тема | Re: Home-brewed table syncronization |
Дата | |
Msg-id | 1057786137.15508.29.camel@software1.logiplex.internal обсуждение исходный текст |
Ответ на | Home-brewed table syncronization (Michael A Nachbaur <mike@nachbaur.com>) |
Ответы |
Re: Home-brewed table syncronization
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Список | pgsql-sql |
On Wed, 2003-07-09 at 14:14, Michael A Nachbaur wrote: > So, I'm looking at syncronizing 4 tables from one master database to several > child databases. I'm thinking of doing the following with DBD::Multiplex: > > DELETE FROM TableA; > INSERT INTO TableA (..) VALUES (...); > .... > > on all the child databases, but I'm not sure what kind of impact this would > have on my servers. My impression is that this would hammer the indexes, and > might blow any memory optimization out the window. Only a few records in my > dataset will change from time-to-time, but just the process of determining > what is different may take more effort than simply rebuilding. Keep a timestamp associated with each record. Only update the records with timestamps later than your last sync. -- Cliff Wells, Software Engineer Logiplex Corporation (www.logiplex.net) (503) 978-6726 (800) 735-0555
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