Breaking: #106041 - TypoScript Extbase toggle config.tx_extbase.persistence.updateReferenceIndex removed 

See forge#106041

Description 

Extbase previously supported the TypoScript toggle config.tx_extbase.persistence.updateReferenceIndex to control whether the reference index should be updated when records are persisted.

It has become increasingly important that the reference index is always kept up to date, since an increasing number of TYPO3 Core components rely on current reference index data. Using the reference index at key points can improve read and rendering performance significantly.

This toggle has been removed. Reference index updating is now always enabled.

Impact 

The change may slightly increase database load, which can become noticeable when Extbase updates many records at once.

Affected installations 

Instances with extensions that write many records using the Extbase persistence layer may be affected.

Migration 

The TypoScript toggle config.tx_extbase.persistence.updateReferenceIndex should be removed from any extension codebase, as it is now ignored by Extbase.