A few day ago I try to install and configure Redis and Varnish (by Turpentine) for my Magento site v.1.8 .
After this, I decide to rollback and I get my old (working) local.xml (which has the configuration for APC and Memcached) and decide to disable the two modules (Cm_RedisSession, Nexcessnet_Turpentine) enditing their xml file in /app/etc/modules with the tag false.
From this point over the var/cache dir is empty.
I try to delete the var/ dir to check permission rights, and what happen is that the var folder is created immediatelly with an empty cache folder inside.
How can I check the Magento cache behavior? Maybe this is because the cache passes from APC or Memcached and exclude the var/cache dir (as I read here https://magento.stackexchange.com/a/11534/9166 ).
This is my cache configuration in local.xml
...
<cache>
<backend>apc</backend>
<slow_backend>database</slow_backend>
<slow_backend_store_data>0</slow_backend_store_data>
<auto_refresh_fast_cache>0</auto_refresh_fast_cache>
<prefix>nameofmysite_</prefix>
</cache>
<cache>
<backend>memcached</backend>
<slow_backend>database</slow_backend>
<fast_backend>Memcached</fast_backend>
<fast_backend_options>>
<servers>
<server>
<host><![CDATA[127.0.0.1]]></host>
<port><![CDATA[11211]]></port>
<persistent><![CDATA[1]]></persistent>
</server>
</servers>
<compression><![CDATA[0]]></compression>
<cache_dir><![CDATA[]]></cache_dir>
<hashed_directory_level><![CDATA[]]></hashed_directory_level>
<hashed_directory_umask><![CDATA[]]></hashed_directory_umask>
<file_name_prefix><![CDATA[]]></file_name_prefix>
</fast_backend_options>
<memcached>
<servers>
<server>
<host><![CDATA[127.0.0.1]]></host>
<port><![CDATA[11211]]></port>
<persistent><![CDATA[1]]></persistent>
</server>
</servers>
<compression><![CDATA[0]]></compression>
<cache_dir><![CDATA[]]></cache_dir>
<hashed_directory_level><![CDATA[]]></hashed_directory_level>
<hashed_directory_umask><![CDATA[]]></hashed_directory_umask>
<file_name_prefix><![CDATA[]]></file_name_prefix>
</memcached>
</cache>
...
Obviously before this changes my var/cache/ dir was populated regularly.
Thanks.