I'd like to add that because Fedora offers a solid set of APIs and (just as important) a decent notification service (via JMS) integrators can build it into very complex solutions with multiple repositories exchanging state in sophisticated ways. But that's to be distinguished from what's available out-of-the-box, which is certainly as Chris described.
--- A. Soroka Online Library Environment the University of Virginia Library On Sep 14, 2011, at 9:02 AM, Chris Wilper wrote: > Hi Gail, > > To clarify, what's possible today is to run Journaling[1] and have > multiple identical Fedoras. In such a setup, you have one "master" > instance and one or more "follower" instances that writes to the > master eventually get propagated to. > > It is possible to use this for high availability with failover, and > with load balancing for reads, but keep in mind that: > > - It requires a complete copy of your repository for each node > - There is still only one node that can be written to at any given time > - Handling the actual failover and load balancing mechanics at a > higher level is completely up to the integrator. > > Part of the goal for Fedora 4.0 (still a ways out) is to modify how > Fedora does object-level storage[2] so that it is more amenable to > true horizontal scaling approaches, with multiple nodes that can > handle writes and data distributed across multiple nodes (instead of > completely duplicated across each). > > - Chris > > [1] https://wiki.duraspace.org/display/FEDORA35/Replication+and+Mirroring > [2] https://wiki.duraspace.org/display/FCREPO/High+Level+Storage > > On Tue, Sep 13, 2011 at 1:45 PM, gail truman <truman.g...@gmail.com> wrote: >> Hello, >> I believe there is a way to federate instances of Fedora to scale out. I am >> interested in any details on this. I want to use the Oracle Storage Archive >> Manager (SAM-QFS) file system behind Fedora (this I know works) and then be >> able to scale out with Fedora. This is part of the Fedora-Based repository >> solution stack - SOAR - >> Thanks >> >> -- >> Gail Truman >> www.trumantechnologies.com >> 1 510 214 2450 (google) >> >> >> >> ------------------------------------------------------------------------------ >> BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA >> Learn about the latest advances in developing for the >> BlackBerry® mobile platform with sessions, labs & more. >> See new tools and technologies. Register for BlackBerry® DevCon today! >> http://p.sf.net/sfu/rim-devcon-copy1 >> _______________________________________________ >> Fedora-commons-users mailing list >> Fedora-commons-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/fedora-commons-users >> >> > > ------------------------------------------------------------------------------ > BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA > Learn about the latest advances in developing for the > BlackBerry® mobile platform with sessions, labs & more. > See new tools and technologies. Register for BlackBerry® DevCon today! > http://p.sf.net/sfu/rim-devcon-copy1 > _______________________________________________ > Fedora-commons-users mailing list > Fedora-commons-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/fedora-commons-users ------------------------------------------------------------------------------ BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA Learn about the latest advances in developing for the BlackBerry® mobile platform with sessions, labs & more. See new tools and technologies. Register for BlackBerry® DevCon today! http://p.sf.net/sfu/rim-devcon-copy1 _______________________________________________ Fedora-commons-users mailing list Fedora-commons-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/fedora-commons-users
