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Maniphest T432875

Build an AWFragmentStore implementation that uses MainStash as its backend
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Description

Description

Update AWFragmentStore to use MainStash as its storage backend instead of MemcachedWrapper.

The interface is already isolated and decoupled as part of [T426235], so changes should be contained to AWFragmentStore with no impact on callers.

Possibly move AWFragmentStore to have an abstract interface and preserve current implementation, so that switchover/revert can happen with a configuration variable.

Desired behavior/Acceptance criteria

  • AW fragments are read from and written to MainStash
  • Existing behaviour is preserved from the caller's perspective
  • System can be easily switched over and reverted if needed

Completion checklist

Details

Related Changes in Gerrit:
SubjectAuthorRepoBranchLines +/-
Build MainStash implementation for AWFragmentStoreGenoveva Galarzamediawiki/extensions/WikiLambdamaster+764 -4
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Event Timeline

gengh created this task.Jul 22 2026, 2:45 PM
gengh added a parent task: T432867: [Milestone 3] Development - Build the new durable storage layer for Wikifunctions and Abstract Wikipedia fragments.
gengh edited projects, added: Abstract Wikipedia team (27Q1 (Jul–Sep)); removed: Abstract Wikipedia team.Jul 22 2026, 3:10 PM
gengh claimed this task.Aug 7 2026, 7:48 AM
gerritbot added a comment.Tue, Aug 11, 8:43 AM

Change #1324256 had a related patch set uploaded (by Genoveva Galarza; author: Genoveva Galarza):

[mediawiki/extensions/WikiLambda@master] [WIP] Build MainStash implementation for AWFragmentStore

https://gerrit.wikimedia.org/r/1324256

gerritbot added a project: Patch-For-Review.Tue, Aug 11, 8:43 AM
Jdforrester-WMF changed the task status from Open to In Progress.Tue, Aug 11, 1:29 PM
Jdforrester-WMF moved this task from Incoming to In Engineering on the Abstract Wikipedia team (27Q1 (Jul–Sep)) board.
Jdforrester-WMF triaged this task as High priority.Fri, Aug 14, 4:01 PM
Jdforrester-WMF moved this task from In Engineering to Ready to deploy on the Abstract Wikipedia team (27Q1 (Jul–Sep)) board.
gerritbot added a comment.Fri, Aug 14, 4:06 PM

Change #1324256 merged by jenkins-bot:

[mediawiki/extensions/WikiLambda@master] Build MainStash implementation for AWFragmentStore

https://gerrit.wikimedia.org/r/1324256

Maintenance_bot removed a project: Patch-For-Review.Fri, Aug 14, 4:31 PM
ReleaseTaggerBot added a project: MW-1.47-notes (1.47.0-wmf.16; 2026-08-18).Fri, Aug 14, 5:00 PM
gengh mentioned this in T432873: Build date static analyser for AW Fragments.Mon, Aug 17, 5:02 PM
Jdforrester-WMF moved this task from Ready to deploy to Needs Sign-off on the Abstract Wikipedia team (27Q1 (Jul–Sep)) board.Wed, Aug 19, 4:48 PM
Jdforrester-WMF closed this task as Resolved.Wed, Sep 2, 10:12 AM
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