| apc | ACM for APC |
| base | |
| eaccelerator | ACM for eAccelerator |
| file | ACM File Based Caching |
| memcache | ACM for Memcached |
| memcached | ACM for Memcached |
| memory | ACM Abstract Memory Class |
| null | ACM Null Caching |
| redis | ACM for Redis |
| wincache | ACM for WinCache |
| xcache | ACM for XCache |
Interfaces
| driver_interface | An interface that all cache drivers must implement |