Hi all!

This Wednesday the ArchCom office hour will be about discussing the next steps towards support for Multi-Content Revisions (MCR). The focus will be on the heart of the proposal, the database schema for associating multiple content objects with a single revision[1]. The basic schema was discussed recently in the context of improving content model storage[2]. This session will be about resolving some remaining questions about the schema, and about discussing the deployment and migration strategy.

Detail questions: - Do we want a single names table, or separate tables for content_model, content_format, etc? - Do we need cont_hash (or cont_sha1) and cont_logical_size? - De we re-use or copy content rows? - If we re-use, does the role live in the content or in the slot label?

Broader questions: - Are the scaling and Efficiency estimates correct? - What options do we have for optimization? - Would the proposed migration plan work?

The discussion is scheduled for 2016-09-21 UTC: Time: Wednesday 21 UTC (2pm PDT, 23 CEST) Place: #wikimedia-office Phab event: [E273][3] [ArchCom/Status][4]

Daniel

[1]: https://www.mediawiki.org/wiki/Multi-Content_Revisions/Content_Meta-Data [2]: https://phabricator.wikimedia.org/E261 [3]: https://phabricator.wikimedia.org/E273 Upcoming meeting [4]: https://www.mediawiki.org/wiki/Architecture_committee/Status