TYPO3 v12 Cache Tag Invalidation Breaks with Non‑Taggable PSR‑6 Backends
Goal Guarantee that flushByTag() reliably invalidates cached entries for core features such as page cache, content element caching, and Extbase persistence. Constraints and Uncertainty TYPO3 v12 migrated the Caching Framework to PSR‑6/PSR‑16, making TaggableCacheInterface a hard requirement for tag‑based flushing. Native RedisBackend implements tags via Redi
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