[MDL-70882] Revert broken cache performance improvement - Moodle Tracker

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Affected Branches:
MOODLE_311_STABLE, MOODLE_400_STABLE
Fixed Branches:
MOODLE_311_STABLE
Pull from Repository:
git://github.com/andrewnicols/moodle.git
Pull 3.11 Branch:
~~MDL-70882~~-311
Pull 3.11 Diff URL:
https://github.com/andrewnicols/moodle/compare/a2fda1289f...MDL-70882-311
Pull Master Branch:
~~MDL-70882~~-master
Pull Master Diff URL:
https://github.com/andrewnicols/moodle/compare/41037efa7a...MDL-70882-master
Testing Instructions:

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CI should cover this mostly
Also being able to install testing sites again without issue (hard to reproduce)

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CI should cover this mostly Also being able to install testing sites again without issue (hard to reproduce)

~~MDL-47456~~ has been causing us a number of issues, primarily around upgrades, and installation of testing sites.

I’m calling for it’s immediate reversion to prevent further issues.

has been marked as being related by

MDL-70706 Edge case with siteidentifier during install, possibly a MUC issue

MDL-70233 alternative_cache_factory_class isn't honored when caching is disabled

MDL-71014 Cache the siteidentifier and site contextid in local cache

is a regression caused by

MDL-47456 DB performance issue with get_config siteidentifier

Component watchers:: Matteo Scaramuccia, David Woloszyn, Huong Nguyen, Jake Dallimore, Meirza, Michael Hawkins, Raquel Ortega, Safat Shahin, Stevani Andolo

Estimated:

Not Specified

Remaining:

Logged:

1h 10m