Symfony2：产品中的PdfBundle导致缓存：清除失败

Question

Even with the PdfBundle vendor's suggested use of umask() the following occurs when attempting to clear cache in (shared host) prod environment if a PDF has been created. If a PDF has not been created, the error does not occur:

[UnexpectedValueException]
FilesystemIterator::__construct(/home/projectmana/www2.projectmana.org/app/ cache/prod_old/zfcache-bd): failed to open dir: Permission denied

directory listing is:

drwx------   2 www-data    www-data      4096 Nov  9 17:15 zfcache-05
drwx------   2 www-data    www-data      4096 Nov  9 17:15 zfcache-18
drwx------   2 www-data    www-data      4096 Nov  9 17:15 zfcache-31
drwx------   2 www-data    www-data      4096 Nov  9 17:15 zfcache-bd

Is there a method in a shared host environment to eliminate this error?

Answer 1

The only feasible alternative in this instance was to add the ability to clear the prod cache in a controller. This SO post was the easiest to implement. Note that in a shared host environment it takes the system administrator to clear prod* directories before the controller action could be effective.

Answer 2

Have you considered using another caching method like apc instead of files?

ps_pdf:
    cache:
      type: apc

https://github.com/psliwa/PdfBundle#configuration