Re: Question on replication terminology
Dual master replication can be either dual master dual write or dual master single writer. The latter is preferred. In this configuration replication is connected in both directions but clients only ever connect to one master at a time. It's just as safe as master - slave replication if you handle the failover correctly. -Eric On Tue, Apr 28, 2009 at 3:43 PM, Claudio Nanni claudio.na...@gmail.com wrote: Hi there, I would only like to stress that the only supported (and recommended) replication solution in MySQL is Master---Slave replication. In this scenario you can have ONLY one master and (virtually) any number of slaves. There is NO other safe replication solution. The terms you mention seems to refer to the same solution, where you have two servers each acting as a master: this is a non standard dangerous scenario in MySQL and requires application logic awareness. Hope to have brought a little light in your mind Cheers Claudio Vikram Vaswani wrote: Hi I'm new to replication and looking through some docs on how to use it. Could someone please tell me if the following terms mean the same thing or, if not, what is the difference: master-master replication dual-master replication bidirectional replication TIA -BT -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=eric.ber...@gmail.com -- Eric Bergen eric.ber...@gmail.com http://www.ebergen.net -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
Re: Question on replication terminology
I think what's really being sought after, here is clustering. --C Eric Bergen wrote: Dual master replication can be either dual master dual write or dual master single writer. The latter is preferred. In this configuration replication is connected in both directions but clients only ever connect to one master at a time. It's just as safe as master - slave replication if you handle the failover correctly. -Eric On Tue, Apr 28, 2009 at 3:43 PM, Claudio Nanni claudio.na...@gmail.com wrote: Hi there, I would only like to stress that the only supported (and recommended) replication solution in MySQL is Master---Slave replication. In this scenario you can have ONLY one master and (virtually) any number of slaves. There is NO other safe replication solution. The terms you mention seems to refer to the same solution, where you have two servers each acting as a master: this is a non standard dangerous scenario in MySQL and requires application logic awareness. Hope to have brought a little light in your mind Cheers Claudio Vikram Vaswani wrote: Hi I'm new to replication and looking through some docs on how to use it. Could someone please tell me if the following terms mean the same thing or, if not, what is the difference: master-master replication dual-master replication bidirectional replication TIA -BT -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=eric.ber...@gmail.com
Re: Question on replication terminology
Hi there, I would only like to stress that the only supported (and recommended) replication solution in MySQL is Master---Slave replication. In this scenario you can have ONLY one master and (virtually) any number of slaves. There is NO other safe replication solution. The terms you mention seems to refer to the same solution, where you have two servers each acting as a master: this is a non standard dangerous scenario in MySQL and requires application logic awareness. Hope to have brought a little light in your mind Cheers Claudio Vikram Vaswani wrote: Hi I'm new to replication and looking through some docs on how to use it. Could someone please tell me if the following terms mean the same thing or, if not, what is the difference: master-master replication dual-master replication bidirectional replication TIA -BT -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql?unsub=arch...@jab.org
