Action Decide on Fedora Modules

Assigned
ABR: 2 JRG: 2

Prev assigned

Tasks adressed
["Tasks/3/3"]

Time estimated
4md

Time used

Priority
?

Status
In progress

Iteration
22

Notes

Problem

Decide on the layout of the final production system. Decide which supporting fedora modules should be used, and in what way.

Progress

Identified external modules

Identified internal modules

Journaling

Journaling provides us with the option to always have a up2date mirror of the running repository. We cannot use this mirror for load balancing, while mirroring Possible scenarios

  1. Primary server fails, we switch server and is up and running in no time
  2. Primary server is momentarily overloaded. We turn off update requests (ie. the GUI) and let both servers handle the load.

This use of this functionality is heavily dependent on the uptime requirements to the final system. Inquiries in this direction have begun

Akubra

Akubra blob storage lives on http://www.fedora-commons.org/confluence/display/AKUBRA/Akubra+Project It is a storage layer abstraction. At the moment it is in version 0.1, but in time it will grow to become the storage layer of Fedora.

The basic idea is a BlobStore, storing Blobs. These can be gotten back, and new ones can be made. At the moment, the DOMS system have to very different storage mechanisms, the one in Bitstorage, and the foxml storage. The akubra project would naturally integrate on top of the foxml storage. The specific system in Bitstorage is more of a problem, through. To use Akubra on the Bitstorage would require a fundamental redesign of how files are handled in DOMS.

It is the recommendation of this group that Akubra not be used in DOMS. Further investigations into managed datastreams in Fedora would be worthwhile and might change the decision.

OAI-Provider

http://fedora-commons.org/confluence/display/FCSVCS/OAI+Provider+Service+1.2

The OAI-Provider service

Conclusion

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