TYPO3 Core

The file cache files are always recreated by the command cache:warmup - even if they already exist and there is no change:

php vendor/bin/typo3 cache:warmup

files have new time stamp, such as:

var/cache/code:

ls -l core/
total 6278
...  24260 Feb  4 10:10 BackendRoutes_2b542f5ab887ff8a73c2bf65e72aa3791d493b97.php
...    521 Feb  4 10:10 ExpressionLanguageProviders_2b542f5ab887ff8a73c2bf65e72aa3791d493b97.php
... 172105 Feb  4 10:10 ext_localconf_2b542f5ab887ff8a73c2bf65e72aa3791d493b97.php
..
ls -l di/
total 1730
... 1478664 Feb  4 10:10 DependencyInjectionContainer_2b542f5ab887ff8a73c2bf65e72aa3791d493b97.php

The system is fully warmed up so there is currently no need to recreate cache files. I am not sure if this has other effects if cache:warmup is not used but I have recently noticed a very large number of log messages like this:

Sat, 04 Feb 2023 08:41:20 +0100 [CRITICAL] request="33281b1d99c16" component="TYPO3.CMS.Core.Error.ProductionExceptionHandler": Core: Exception handler (WEB: BE): TYPO3\CMS\Core\Cache\Exception, code #1334756737, file /var/www/mysite/releases/106/public/typo3/sysext/core/Classes/Cache/Backend/SimpleFileBackend.php, line 232: The temporary cache file "/var/www/mysite/releases/106/var/cache/code/di/63de0c2025346392264361.temp" could not be written. - {"mode":"WEB","application_mode":"BE","exception_class":"TYPO3\\CMS\\Core\\Cache\\Exception","exception_code":1334756737,"file":"/var/www/mysite/releases/106/public/typo3/sysext/core/Classes/Cache/Backend/SimpleFileBackend.php","line":232,"message":"The temporary cache file \"/var/www/mysite/releases/106/var/cache/code/di/63de0c2025346392264361.temp\" could not be written.","request_url":"https://mysite/someurl","exception":null}

Versions¶

tested with

- latest main (v12)
- 11.5.22