[WIP] Refactor use of 'content_metadata' as cache.
Depends on: !191 (closed) Mutually exclusive with D1838.
TODO:
- tests
- add 'mappings' to the DB
content_metadata table
Migrated from D1836 (view on Phabricator)
Depends on: !191 (closed) Mutually exclusive with D1838.
TODO:
content_metadata table
Migrated from D1836 (view on Phabricator)