Please have a look:
http://forum.typo3.org/index.php/m/721058/#msg_721058
Either my configuration is wrong, i dont get something or the caching behaviour of some caches does not qualify for APC Backend.
###
My apc config:
Runtime Settings
apc.cache_by_default 1
apc.canonicalize 1
apc.coredump_unmap 0
apc.enable_cli 1
apc.enabled 1
apc.file_md5 0
apc.file_update_protection 0
apc.filters
apc.gc_ttl 0
apc.include_once_override 0
apc.lazy_classes 0
apc.lazy_functions 0
apc.max_file_size 7M
apc.mmap_file_mask /tmp/apc.tEOnNw
apc.num_files_hint 0
apc.preload_path
apc.report_autofilter 0
apc.rfc1867 1
apc.rfc1867_freq 0
apc.rfc1867_name APC_UPLOAD_PROGRESS
apc.rfc1867_prefix upload_
apc.rfc1867_ttl 0
apc.serializer default
apc.shm_segments 1
apc.shm_size 2048M
apc.slam_defense 1
apc.stat 0
apc.stat_ctime 0
apc.ttl 0
apc.use_request_time 1
apc.user_entries_hint 0
apc.user_ttl 0
apc.write_lock 1
###
My Cacheconfig is as follows (located in AdditionalConfiguration.php):
$pagecache = $systemcache = array(
'backend' => 'TYPO3\\CMS\\Core\\Cache\\Backend\\ApcBackend',
'frontend' => 'TYPO3\\CMS\\Core\\Cache\\Frontend\\VariableFrontend',
'options' => array('defaultLifetime' => 0)
);
$pagecache['options']['defaultLifetime'] = 21600;
$pagecache['groups'] = array('pages','all');
$systemcache['groups'] = array('system');
$systemcache['options']['defaultLifetime'] = 0;
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_pages'] = $pagecache;
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_pagesection'] = $pagecache;
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_hash'] = $pagecache;
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_rootline'] = $pagecache;
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['fluidchunks'] = $pagecache;
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['pidlist'] = $pagecache;
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['subtypes'] = $pagecache;
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['news_categorycache'] = $pagecache;
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_object'] = $systemcache;
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_reflection'] = $systemcache;
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_datamapfactory_datamap'] = $systemcache;
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_typo3dbbackend_tablecolumns'] = $systemcache;
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['generatedflex'] = $systemcache;
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['l10n'] = $systemcache;
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['extbase_typo3dbbackend_queries'] = $systemcache;
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['cache_core']['backend'] = 'TYPO3\\CMS\\Core\\Cache\\Backend\\FileBackend';
$GLOBALS['TYPO3_CONF_VARS']['SYS']['caching']['cacheConfigurations']['class_cache']['backend'] = 'TYPO3\\CMS\\Core\\Cache\\Backend\\FileBackend';
###
TSConfig for users:
options.clearCache.pages = 1
options.clearCache.all = 1
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