I suggest buying a copy of High Performance MySQL 3rd edition that just came out. It has a whole chapter on HA that answers a lot of these questions.
On Mon, Apr 2, 2012 at 6:14 PM, Wes Modes <wmo...@ucsc.edu> wrote: > >> Replication rings are possible but you must design your application to >> take special care to NOT update the same row in multiple nodes of the >> ring at the same time. This is even harder to design and code for than >> splitting writes/reads to master/slaves. >> >> Also the loss of one node of a replication ring is not as easy to >> recover from as simply promoting one slave to become the new master of >> a replication tree (demoting the recovered former-master to become yet >> another slave) as there may be pending events in the relay logs of the >> lost node that have not yet been relayed to the downstream node. >> >> I may not have every answer, but I have seen nearly every kind of >> failure. Everyone else is encouraged to add their views to the >> discussion. >> > > Has anyone used maatkit or Percona to setup circular replication? How > does it affect this system's reliability and robustness? Do the tools > help to deal with fail over? > > W. > > -- > Wes Modes > Systems Designer, Developer, and Administrator > University Library ITS > University of California, Santa Cruz > > > -- > MySQL General Mailing List > For list archives: http://lists.mysql.com/mysql > To unsubscribe: http://lists.mysql.com/mysql > -- 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
