t3lib_cacheExceptions thrown when writing concurrently to db
It looks like there is a problem with the default caching Backend. When I write to the db concurrently (e.g. with a extensions using ajax in the backend to go through all pages), one of the instances throws Exceptions e.g. that the
directory does not exist or is not writeable (it is both)
or that single files in that directory cant be altered.
as soon as i comment the exception throwing in line 203, 283, 300 in the
class.t3lib_cache_backend_filebackend.php file, everything seems to work.
Checked in Typo3 4.7 and 6.0