Hi Neil, Whats your setup like? What kind of data are you looking at synchronizing?  If you would like to keep your server setup private email me and i will assist you with the setup... its pretty straight forward... but it all really depends on the nature of your proposed setup. Simpson Moyo <div class="gmail_quote">On Sat, Jul 12, 2008 at 12:31 PM, Neil Coetzer <<a href="mailto:ncoetzer@halsteds.co.zw">ncoetzer@halsteds.co.zw</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div> Hi guys, This isn't strictly Ubuntu-related, but since we're planning to implement it on Ubuntu servers I thought I would ask anyway. <img alt=":)" align="middle" border="0"> Does anyone know anything about implementing semi-synchronous mysql database replication between a master and slave? As I understand it, this would mean that the master would wait for confirmation from at least one slave that a transaction has been successfully replicated before telling the client that the change has been committed. With asynchronous replication there would be a chance of losing transactions if the master crashes before the slave has replicated those transactions and semi-synchronous replication would go a long way to solving this. I know a couple of guys at Google came up with a patch to allow this functionality, but I haven't been able to find out if it has since been built into later mysql releases. I also haven't been able to find a "howto" that shows exactly how to implement this. Would appreciate any input from someone who knows more about mysql. My knowledge on the subject is pretty limited at this point. Cheers, Neil </div> -- This message has been scanned for viruses and dangerous content by <a href="http://www.mailscanner.info/" target="_blank">MailScanner</a>, and is believed to be clean. -- Ubuntu-zw mailing list <a href="mailto:Ubuntu-zw@lists.ubuntu.com">Ubuntu-zw@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-zw" target="_blank">https://lists.ubuntu.com/mailman/listinfo/ubuntu-zw</a> </blockquote></div>