TYPO3 Core

Dashboards uses TYPO3's caching framework by default. More specifically, the \TYPO3\CMS\Core\Cache\Backend\SimpleFileBackend for the BE.

With this caching backend, the lifeTime value is not taken into account as far as I can see.

The to be cached data is written into the directory typo3temp/var/cache/data/dashboard_rss/ as files. These cache files don't get deleted/rewritten after the life time expired. Even if I run the Scheduler task "Caching framework garbage collection". I suspect that data (for example RSS feeds) that has been cached once, will be read from the file cache from that point on, and not refreshed after the expiration date/time has been reached/exceeded.

It'd be great if someone could verify/clarify if the SimpleFileBackend takes the life time into account at all or if a different caching backend should be used by EXT:dashboard by default.