Re: Replication
От | Eugene Ogurtsov |
---|---|
Тема | Re: Replication |
Дата | |
Msg-id | 4671F6CA.2090908@swsoft.com обсуждение исходный текст |
Ответ на | Replication ("Craig A. James" <cjames@emolecules.com>) |
Список | pgsql-performance |
What about "Daffodil Replicator" - GPL - http://sourceforge.net/projects/daffodilreplica/ -- Thanks, Eugene Ogurtsov Internal Development Chief Architect SWsoft, Inc. Craig A. James wrote: > Looking for replication solutions, I find: > > Slony-I > Seems good, single master only, master is a single point of failure, > no good failover system for electing a new master or having a failed > master rejoin the cluster. Slave databases are mostly for safety or > for parallelizing queries for performance. Suffers from O(N^2) > communications (N = cluster size). > > Slony-II > Seems brilliant, a solid theoretical foundation, at the forefront of > computer science. But can't find project status -- when will it be > available? Is it a pipe dream, or a nearly-ready reality? > > PGReplication > Appears to be a page that someone forgot to erase from the old GBorg > site. > > PGCluster > Seems pretty good, but web site is not current, there are releases in > use > that are not on the web site, and also seems to always be a couple steps > behind the current release of Postgres. Two single-points failure > spots, > load balancer and the data replicator. > > Is this a good summary of the status of replication? Have I missed > any important solutions or mischaracterized anything? > > Thanks! > Craig > > (Sorry about the premature send of this message earlier, please ignore.) > > > > ---------------------------(end of broadcast)--------------------------- > TIP 2: Don't 'kill -9' the postmaster
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