Wikimedia Platform Engineering/Site performance and architecture

Rationale
Many small architectural changes and improvements are being done all of the time without a lot of fanfare. This is a general activity area where we communicate changes made along these lines.

April-June 2013

 * JobQueue improvements
 * Eqiad migration wrapup
 * Migrate fenari to tin.eqiad.wmnet
 * Migration to Ceph - still running sync scripts, possible split-brain issues with memcache
 * Migrate hume to terbium.eqiad.wmnet

Mysterious future
As yet unscheduled work for the (hopefully) near term:

Deployment sprint
This will be a part of the Release Management/QA quarterly review/sprint creation. Please see that page for more details.

Performance sprint
(All bugs listed in a sortable BZ search.)
 * - resetUserTokens.php not usable on large wikis
 * - Rewrite jobs-loop.sh in a proper programming language
 * - Separate Cache-Control header for proxy and client

Shell automation sprint
As yet completely unscheduled
 * - Enable importing across all Wikimedia projects

Documents

 * Task management: Bugzilla
 * Release management plan:
 * Communications plan: