Where Does TYPO3 Store Config and Cache?
TYPO3 keeps instance config in typo3conf/LocalConfiguration.php with extensions beside it, and runtime cache in typo3temp, over its database.
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TYPO3 splits instance state across config files, file storage, temp data, and the database. LocalConfiguration.php holds database credentials and paths while extensions live beside it. Runtime cache accumulates in typo3temp separately.
Upgrades respect this split by preserving config and content while refreshing code. Cache clearing through the Install Tool fixes most post update breakage. Full migrations move all four pieces or attachments detach from records.
Where TYPO3 stores this, by platform
/var/www/html/typo3conf/LocalConfiguration.php
Credentials plus paths config beside extensions. Temp cache flushes through Install Tool. Database holds content separately.
Frequently asked questions
How do I back up TYPO3?
Dump the database plus copy LocalConfiguration.php, fileadmin, and uploads with the web server stopped. All four halves matter for restores. Test on staging since versions mismatch painfully.
How do I clear TYPO3 caches?
Flush typo3temp through the Install Tool or delete its contents with the instance offline. Stale caches cause white screens after updates. The tool rebuilds everything needed automatically.
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